Bad reflux at night with 6 week old!

My baby has been having horrible reflux and gas at night. He has it during the day too but it’s manageable because we can prop him up easily and it helps. At night he passes out in our arms and as soon as he hits the crib he grunts sooo much and tenses up, then ends up spitting up a ton. He doesn’t really cry at night, just grunts and groans nonstop until he wakes himself up. We’ve used the same formula since the hospital, similac pro advance. We tried enfamil gentlease and it was 10x worse so we stopped. Today I switched to pro sensitive to see if that helps at all. I just feel so bad because of how much he spits up at night and I can tell he’s in pain at times. We use gas drops and gripe water which help sometimes. Last night I got 1 hour of sleep because he had to be in my arms. I don’t mind it but obviously I can’t do that every night 😭