It's OT for this board, but has he got his two-year molars already, and if not could they be coming now? Your description reminds me more of times when my DS wasn't feeling great than anything else.
I was thinking the same thing. DD can be quite the drama queen if something is "off" like this.
I also agree with the suggestion of having everything in sight and letting him choose for himself. I normally don't play with DD unless she specifically asks me too since I know that alone time with her toys are also important for her development too. Granted, some days she wants me there playing with her 24/7 but others she can play independently for long periods of times (especially if she's playing in a different room and doesn't see me).
