Is this normal? My ds is not settling anymore when I put him down at 12.30 (used to wail but go to sleep after 10 mins)He's started undressing himself - yesterday trousers, today top and socks! and yelling at me to come and get him. Do they cut down on their nap before they give it up completely? He has always had at least two hours sleep before the last couple of days. I should add he also has an 8 week old sister if that has any bearing on this.