Feel like a bad mother

My baby is 7 weeks old, and he has very bad reflux - the silent and acid one, and he has a lot of gas problems. I’m only breastfeeding and in a super strict diet but he doesn’t seem to stop crying and almost never sleeps, for a newborn this really concerns me. He’s already under medical treatment and we’ve tried everything but nothing works. Everyone tells me this will pass, and they are probably right but right now it seems eternal and horrible. I am exhausted and tired of not sleeping and not being able to help my baby. Sometimes the day passes by and I’m still just trying to soothe by baby and I don’t eat or drink water because I cannot leave my baby, plus next week I have to start working again. I’m starting to get desperate. Sometimes I lose my patience and cry along with the baby because I don’t see how it’ll get better anytime soon or at least see a light at the end of the tunnel. Its been more of a torture than an enjoyment these first few weeks and I feel so guilty. I know its not my babys fault I’m 100% aware but I can’t help feel this way. Anyone else with a similar experience?