Hi mummies! Please help

My 3 months old baby used to take both the breast, and formula from the bottle. When my milk finally kicked in, 7-8 days after birth, her feeding routine was breastmilk straight from the breast, a little playtime, top up with formula then off to sleep.

When the dreaded colic, gas and wind arrived, I was advised by my GP to stopped using the bottle and exclusively breastfeed her, thus bottle feeding gets lesser and lesser, unknown to me during this time, she actually wasn’t gaining much weight. In the first few weeks when she was having both breast and formula she could easily gain 230g a week, but ever since I started exclusively breastfeeding her, she has only gained around 50-70g a week. She’s is on the 13th percentile which is not ideal at all as she’s constantly crying, hungry and unable to sleep, my supply has always been very low, I have taken everything I could think of, medication, lactation cookies, herbal soups, pumping after her feeds, though my biggest problem is, she would now refuse the bottle at all cost, no matter how hard we try, from my husband, friends, she cries like crazy when we put her bib on, even before she sees the bottle. We had seen countless GP, lactation consultants, feeding consultants but to no conclusion, I know that if she will take the bottle again, all of our weight gain worries would be gone, but all we were told from the professionals is to just continue breastfeeding her.

Please help, from a very stressed out mother with her first born child getting so depressed and frustrated that my husband had to quit his job. 😭 😭 TIA