sleeping troubles

my son is 14 weeks old. I can't get him to sleep in the crib for longer then one hour. he'll only sleep on my chest or craddled for longer. around 5-7 hours. i was told to put him down when hes sleepy and leave for 15 minutes and start over if hes crying alot by soothing him but he won't sleep in the crib. he'll just keep crying and get louder. ive tried having him swaddled and not swaddled. I hate seeing him cry so much. Im so sleep deprived and i need help 😢😢😭😭