Ds is in reception is doing phonic sounds. He has homework to go though letters and tick off the sounds. He gets s and a but when we get to t he does the t action but says the sound as st st. Also when i point to a letter he will go though all the sounds hes learnt in the order hes learnt them so when i point to t he will go s s s a a a st st st so its not obvious hes actually picking up which letter is connected to the sound. Ds is also suspected asd and has had speech i dont know if the st for t is him struggling to pronounce the sound and if so would this then be right but then he would struggle with blending because it wouldn't sound right. I have been using the app teach my monster to read with him hes getting though the levels but you can see hes guessing them all even s and a. Any advice would be great.