have a similar thing going on with my 11-week old, although with daughter NOT gaining enough weight causing lots of HV concern. Nothing works for us but this - definitely not a miracle cure, but helps:
give baby bottle until they start the screaming part. Stop, burp them and allow them to calm down (we use a dummy to do so and it works quite well). We then give our baby the next bit of the bottle while gently bouncing on the birthing ball or rocking and shhh-ing her, stopping to wind her and calm her with dummy as much as is needed. A change of room or turning the TV on mid-feed sometimes helps for some reason, distraction maybe! It takes quite a long time, but she has become more relaxed during feeds since we've done this, and we now only need to stop 4-5 times to get her to take 120ml (sorry don't do oz!) as opposed to 20+ times! Possibly bad habit forming, but you do what you have to do for your child's health and your immediate sanity!
Gripe water sometimes helps a bit but is vile!
We thought it was reflux or possibly dairy intolerance, paediatrician disagreed and said it was just one of those things (sigh!). Haven't got to the bottom of it yet but I am beginning to think she just suffers very badly with wind for whatever reason.
We saw a cranial osteopath this week and, while she's not that much calmer (a little, perhaps), she's A LOT hungrier.
Really do feel your pain. I've cried a lot of tears about it, dreaded feeds, especially night feeds.