I am so frustrated with my son right now for the pass three days he will only sleep on my chest…

I am so frustrated with my son right now for the pass three days he will only sleep on my chest (which im not a back sleeper at all) and I have to pat his butt until he's in a deep sleep which he's been taking forever...tomorrow all nap while be in his crib he's just going to have cry it out and get use to sleeping without me (hurts my heart to hear him cry ) but it has to be done