eddison has been up since 3 I tried to put him down for a nap. I have to manually rock him and then…

eddison has been up since 3 I tried to put him down for a nap. I have to manually rock him and then set with him on me or he won't sleep. well he fought sleep for so long I had to give up so I can Fix diner. but he can't stay up for 5 hrs???? but if he takes a nap any later he'll he up all night??!! I Dont know what to do. advice. he almost 5 months