My dd, though a little younger, seems to go through stages of this. She will read really confidently and fluently for weeks and then literally overnight she will go backwards and suddenly she will struggle with words and sounds that she has known for years. But then, she will get back on track, usually ahead of where she was before 'fell back'. It's happened a couple of times and initially it worried me, but now I just leave it. So I guess really I am agreeing with CFK, it might worth just leaving it for a while and seeing what happens. Others might have had different experiences and be able to shed more light, but for us, just leaving it has worked.
