I feel pressured to supplement.. HELP

My daughter is barely back up to her birth weight at 4 weeks old. I have been exclusively breastfeeding and we’ve been on quite a roller coaster. She was born with a significant tongue and lip tie which we got taken care of. We have been to multiple chiropractor appointments and lactation consultant appointments but I’m still struggling with getting her to latch correctly. I have an appointment with her pediatrician to follow up with her weight check and I have a feeling she’s going to ask me to supplement with formula. I really want to breastfeed. Any one been in a similar situation? It stresses me out.