For mommas who give Zantac for reflux, how long did it take you to see a difference with your baby’s overall well being?

We finally got a prescription today and I noticed that my daughter has been passing A LOT of painful gas, and sleeping non stop. I just miss my happy baby. She’s always so upset and in pain and it’s killing me. We can’t do tummy time, activity mat, go anywhere etc because she’s always screaming 😩 I’ve never even seen her smile or coo.