Really unsettled baby - HELP

My baby is now 16 weeks. And has been so uncomfortable at feed times. It’s been going on for 10 weeks or so

Since 6-7 weeks, she has cold like symptoms, coughing wheezing etc and doctors say she is fine.

She hiccups a lot as well. She drinks 1-2oz and then gives up and screams and cries in pain and won’t take anymore. I have to give her it once she’s nodded off. I’ve tried changing teat sizes, positions etc, I wind regularly.

Ive tried infacol and gripe water. I’ve took her to docs, they’ve gave gaviscon, which didn’t work and now we’re on omeprazole for silent reflux. It’s been a week but it isn’t making a difference. She is still really irritated at feed time. Does not want her bottle. Does it sound like CMPA? She hasn’t picked up that much weight either so it’s hard. Always irritated unless she is actually asleep

She sleeps from 11pm-9am and doesn’t wake for a feed, even I do wake her she’ll scream and cry. And only has 4 bottles a day, where I have to force her to drink at times :-(

Any advice?