I have been working with a child with a very similar profile for just over 2 years now. He has gone from virtually no sounds at all to talking in full and largely clear sentences. It has been lovely to see how much he has come on. In the early days we took the pressure off talking and did lots of general listening work and listening/auditory discrimination work for phonemes using the Nuffield Dyspraxia pictures, as well as using the Talk Tools approach to developing his oromotor skills. His mother has been exceptional in the way that she has worked with him, and I am sure that this has been the key to success, along with the guidance and activities that I have done with him. If you would like to talk to me about what I have done and how we have progressed things, then please do give me a call.