16 week old hates breastfeeding all of a sudden 😩

My baby breastfed perfectly up until I went back to work at 12 weeks. She went on a nursing strike then I had my husband and mom pace feed her (my pumped milk) and things got better. However at 15 weeks all of a sudden she started fighting me at the breast again. She’s 16 weeks now still fighting me, will only breastfeed when she’s napping and once I put her to sleep for the night 😩 it’s so heartbreaking. I’m not ready to stop breastfeeding her and I don’t understand how she could be done either before she even starts solids. Any ideas on how I can get her to enjoy it again? I’ve tried skin to skin and she’s on reflux medicine.