Need help.

My one month old daughter REFUSES to sleep on her back. She’ll only sleep on our chest meaning I haven’t had one decent night of sleep since bringing her home. I need some advise. She’s EBF, tried co-sleeping, dockatot, swaddling, you name it we’ve tried it. I asked her doctor today at her one month check up and she said let her cry it out for five mins and she’ll fall asleep. Well we’re going on hour five and it’s not working. Any advice? Please.