Pei Lin, my son has amazed me too with reading. In a month of practice P1 to many songs, not only those from Introductory, I've pressed P2 few days, and few day ago P4 (on the songs he knows by heart - still, it was a bit confusing, so he had to read to play good). Guess what? He's doing great! I think they are able to learn very fast to sight read! I'll try to see how far can he get so I'll go to P5 soon for the same song.
Of course, we're also do sight-reading for other albums, like Nursery Songs, so he's practicing sight-reading, but in P2 for now.
I'm like this
with my son lately! It has become a habit of being knocked down by his progress. I think we should trust more our children and their ability to learn.
Andrea