I just fed him for 45 mins and put him on a mat. He played for 15mins batting some toys and then turned onto his side, shoved his knuckles in his mouth and sucked himself to sleep within 3 minutes without so signal to me that he should be fed. His sucking was also so quiet I didn't notice until he was almost completely asleep.
My ds is 6 and still sucks his thumb. Would introducing a dummy prevent this in my 10 week old?