That is incredible!!! Hats off to you for your patience and dedication! My son is already 4 years old. Can I still do that to him now? He likes books very much and I noticed that he recognizes the word ON. I hope that is a good indication.
When he was just an infant I did my own flash cards in addition to the ones we bought and did that every day. But I got lazy. I hope it's not too late for me and my son.
Thanks very much for sharing!!