My 1 month old wont sleep.

Ti
So he use to sleep like 2 hour naps through the day like 4 naps a day for like 2 hours. Now lately he won't take a nap at all he will yawn and fight sleep like no other. The longest he will take a nap is like 20 minutes and maybe 2 of those naps and then a like two 10 minute ones THATS IT. Right now hes usually sleeping but he wont sleep i let him cry a little like 3 minutes and he was yawning like crazy and he closed his eyes for seriously 20 seconds and was awake like nothing. He just doesn't want to sleep anymore. And he will cry and cry for a little and i know hes tired but he wont sleep.