SK sorry you are having such a hard time of it. Did they give you any advice on how to manage the reflux?
I'll tell you the things I've been told and learned and hopefully they help.
After feeding hold Jake uptight for at least 20 minutes to help the food stay down, if you have a bouncer with quite a high back then you can use that but he needs to be almost upright.
Stack his Moses basket/crib so the head end is elevated.
Try to get Jake to take a dummy after his feeds. The sucking action works two fold. It creates saliva which dilutes the acid and the sucking action encourages the muscle at the top of the stomach to stay closed.
I know how hard this one will be but you really need to try to stop letting him comfort feed. Noah was a comfort feeder to start with his reflux. Some days he was eating every 90 mins. It makes things so much worse. They don't need that much food or water and it it only aggravates their stomach and oesophagus. If Jake is like Noah he'll be screaming for the food so you need to try dummies, rocking him, walking with him even if it's only round the room. Also gentle bouncing and swaying are meant to help although they dint work for us.
I know not feeding him is probably the last thin you want to do but it's always been strongly stressed to me that the problem will never get better and the vomitting won't reduce when they are getting as much food.
The comfort eating won't last forever, and hopefully Jake will grow out of his reflux quickly. But even in Noahs case where his reflux is getting worse with age we've now switched to the state where he refuses to feed and it takes and hour and a lot of persuasion to get him to eat.
Take all of the support where you can get it, I don't necessarily mean meds but if they are what you feel you need by all means take them. Lean on your DH, any friends or family nearby and make sure you get some time where you can just step back from Jake. It's the one thing I lack with my OH working away and after 14 weeks of a screaming reflux baby mostly on my own it is really starting to take it's toll.
Keep talking to us, even if it's to vent and hopefully things will improve for you both soon