Gassy baby with reflux formula question

Hey everyone. To start out, my baby is almost 6 weeks old and has had horrible reflux from the start. I was originally breastfeeding and it made her very sick. We tried gentlease from similar and it helped, but she was still spitting up. We tried similac total comfort and she went back to puking curdled formula every time she ate and pretty much the whole two hours between feedings. She’s on similac sensitive now but she’s still pukey. My mother wants me to try soy formula but I’ve read that a lot of kids have soy allergies or sensitivities. Does anyone have experience with soy formula for babies with gassiness, reflux, and a possible lactose sensitivity? I’m sorry for the wordy post, I’m just not sure what to do. She cries in pain from the reflux and struggling to pass gas and I need some help.