I have a three month old who looooves to be held. It's so bad (for lack of better word) that he basically only sleeps in my arms. If I try to lay him in his crib he wakes shortly after crying. While I love cuddling and snuggling him, I'm exhausted, my house work is suffering, and on and on. When should I stop going to him at every cry as to not spoil him and make him think this is how to get his way??