my 9 week old has been napping for oddly short periods of time these last few days. 50 minutes tops. he wakes up and acts hungry so i feed him and entertain him until he’s tired again. well he just woke up after a 50 minute nap and after a few minutes of being awake, acting hungry and cranky, i laid him on my chest and he went back to sleep. is there a reason he’s waking up from his naps instead of sleeping longer periods like usual? should i continue to put him back to sleep like this? he didn’t fuss at all once i laid him on me. he did spit up right when he woke up..could reflux be bothering him? i don’t exactly know