Kal-El had just finished the pink series when he hit a brick wall in his reading and became very grouchy about it and uninterested. Coincidentally, it was at this same time that I received my Dwyer pamphlet in the mail. However, he does not have all the prerequisite skills to just switch from PBG to Dwyer and start right in with the object boxes and movable alphabet where he is. A lot of you might be in the same place so let me tell you how we are transitioning. I am using my own best judgement on this, so if anyone else decides to transition please let me know, comment about it here, blog about it, whatever... I'd love to see how others would handle it and get a dialog going.
Dwyer continually stresses the importance of aural preparation. For example:
...this stage is of the utmost importance both for the young children and for those who enter school at 5 or 6 years and unless it is thoroughly covered, it will jeopardise [sic] the rest of the scheme...once the child enters the Children's House it should be carefully reviewed to make sure that no step has been left out. If children arrive who have not had the happiness of playing these activities at home it is essential for the Children's House to start filling the gap from day one. 
Fortunately, Kal-El has had thorough aural preparation (with one exception). The Gettman and Montessori Read & Write are what I used to learn how to do aural preparation and they both are compatible with the Dwyer scheme. However my inspiration for our transition is Dwyer's idea of filling the gaps before proceeding.
Kal-El's first gap is that he only knows the single sandpaper letters. This means he can work with Dwyer's "object box one" but he cannot move on to object box two or to the activity word game as she describes it (whether a verb falls into box one or two is not based on spelling but rather on how difficult it is for the child to interpret. For example it is easy to "bark" but hard to "flash", at least without getting naked). He also cannot write freely with the movable alphabet. He gets really angry with the movable alphabet because he can't write what he wants to write. This is why the PBG scheme uses object boxes with the movable alphabet.
He already has sound awareness for all of the double-letter sounds in any position and can demonstrate all levels of the sound game using them, so it is a simple matter of taking some time to teach him those 13 sandpaper letters. I also am working on filling one gap in his aural preparation. Montessori Read & Write unintentionally leads you to only play the sound game with words that have three sounds in them. Dwyer includes an extra step. After the child is able to identify the 40 key sounds in either the first, last, or middle position of a three sound words Dwyer says "The adult must now guide the children step by step until they can work out for themselves every sound contained in any word however long. So at this stage we ask the child to think of a word and then break it into its sounds."
Dwyer's description of object box one includes words such as "pelican" and "cabinet." I think this multi-syllable step is important because when the child is introduced to the movable alphabet they should be able to write whatever pops into their head (that's what makes it so exciting). It should be no surprise that what pops into their head may or may not be made up of words containing no more than three sounds. By the way, I think this is all related to why an album that uses the PBG scheme will direct you to acquire two movable alphabets in differing colors and an album (such as the Gettman) that uses the Dwyer scheme does not. When you are presenting only single letters to start, you only use the red/blue movable alphabet with the pink series. When you teach the double sandpaper letters and begin the blue series the second color (often black or green) is used when you start the blue series with its double-letter sounds. Each double letter phonogram can be written with the alternate-colored alphabet when they occur, for example: "fish" or "scout." The Gettman assumes that the child already knows the single and double sandpaper letters the first day they use the moveable alphabet and it would be unnecessarily complicated to introduce two alphabets of differing colors. Although, if your alternate alphabet was green then everything would match the colors of your sandpaper letters and I don't see any reason why you couldn't have two. Great, I didn't think of that. Now I really wish my second movable alphabet was green instead of black.
I have put our movable alphabet away for now. I haven't completely decided what to do about that yet. He definitely needed a break. I could wait until he has mastered all of the double sandpaper letters and bring it out fresh. I have both the traditional red/blue movable alphabet and a second movable alphabet in black so alternatively, I could teach him how to use the two alphabets together by introducing some of the black letters along with some object boxes to use with the movable alphabet.
I think the simplest way to describe our transition is that we are staying with the PBG order of introduction (for Kal-El. Me Too will do Dwyer from scratch.) but we are switching to using Dwyer materials. So, on my shelf will be the single and double sandpaper letters, the two movable alphabets, one object box, and we will do the activity word game. The objects that go in our object box are pink for now. We are adding objects with more syllables. Soon the objects in that object box will be from the blue series, someday from the green series. Those objects can also be used with the movable alphabet until he has learned enough to write freely. We play the activity word game, but right now I can only use "pink" verbs. Eventually I will use "blue," then "green." This is the way I have come up with to continue with the PBG scheme that we were too far into to quit, while at the same time free myself from making all those materials and work with my child in the more personal way that Dwyer advocates for language work.
MORE POSTS ON THE DWYER APPROACH IN THIS SERIES CAN BE FOUND HERE.