If u read my letters I can still suggest the same. My ds didnt like pupd at all, so I did another trick. Just sat next to him. Still do but step by step I always sit a bit further from the bed, and hope in a week or 2 he can do it on his own at all.
First time he screamed 1,5 hrs with no stop, but at least I was there with him, that gave him a security. 2nd time only 40 mins. then theres no more scream, sometimes a little cry which helps him to fall asleep, also the first teth r just coming out, but by now, depends how tired he is, between 25 and 9 mins. he is asleep. Try it, be patient, trust your LO and dont forget that screaming is just his u know babies know that moms get sorry so they do, u give them a cuddle, they know...u can do it!!!!!!!!!!!!