I had a few answers that were question marks too. In a couple of places, I did remember similar milestones, but just not the one they asked for - so I put down the similar milestone and the timing.
Check with friends and family. Some of them might remember some things. Also, you can sometimes make progress by comparison - I wasn't able to exactly remember when DS did 30 piece puzzles, but I did remember that DD did them before DS and she was nearly 2, but he caught up soon after.... etc.
DS is 7.
Interestingly enough, DD is 6. She won't cooperate with testing and we can't prove she is even moderately gifted, much less profoundly gifted. However, she has dropped tantalizing hints along the way that she might well be smarter than her brother. Just by having DS in the program, we get a lot of benefit that has helped us with her - even though she isn't in the program.
