I'm losing my mind 7 week old D'S just will NOT sleep. He sometimes nurses to sleep, but not often and usually we have to rock him for ages until he sleeps..and then the minute we put him down, he wakes up again. He will mostly stay asleep if we hold him (but sometimes just wakes himself up randomly) but will not tolerate being put down. The problem is that I have a 2.5 year old DD and so can't hold him all the time

Advice, commiseration, anything welcome!