I think my babygirl has reflux…

Hey y’all! As the subject says..I am thinking my little one has reflux. Lately she has not been able to finish her normal 4 oz bottles…she generally will leave an ounce or if I get her to finish. It requires lots of stopping, burping and resting. She cries in discomfort until she is burped. I feel so bad. She has her 2 month appointment on the 28th of this month. Should I wait until then to talk to her pediatrician or go ahead and see if I can get her in sooner in regard to the reflux?? Any tips from mommas struggling with reflux?