Ds3 is 13mo, crawling and cruising a bit but not walking and no words yet. Ds2 is at Pre school 2 and a half days a week so in theory I have more time to play with ds3 now but he is driving me insane! He loses interest in books after a couple of pages, he won't stack things or play with shape sorters, basically any toy he gets his hands on he examines for a few seconds, puts it in his mouth, bashes it a bit then chucks it down and goes for something else! It's maddening. He is quite rough in general, grabs at us and bites
a fair bit. Is this normal?? My others weren't like this at all and they are all boys! Help!