Crying when breastfeeding

The doctor has told me that my daughter has a bit of reflux but lately she’s been crying while breastfeeding and has not been getting a good feeding. She’ll latch and suck a few times and then cry and pull off the nipple. I try to stick it out but it never seems to get better for her. I supplement her with a breast milk bottle afterwards and she takes that down with no problem. Any suggestions on positioning or things that I can do to make it more comfortable for her? It’s not every feeding, usually starts happening in the early evening until bed time. She’s almost 5 weeks old.

Thanks!