Reflux and sleep training- HELP!!

I suspect that my 11 week old has silent reflux, he makes lots of noises at night when laid down on his back. During the day he frequently spits up. Sometimes has trouble latching on as he is fussing so much, or screams half way through a feed then he won’t settle. he frequently has hiccups and he has periods of screaming and crying that can last hours.

Lately he has been terrible at going to sleep unless cuddled up to either me or his dad. I would love for him to sleep in his own bed from the start instead of having to be cuddled to sleep for hours each nap/bedtime. We have tried the pick up put firm method but the second he touches the bed he starts crying. I’m at my wits end!!

Any advice?? Xx