Sounds really dumb but feel like a failed mother. Is it possible to bring back my milk supply?

I wish I was still breastfeeding. After my baby suffered oral thrush that never left at only 2 and 3 months and being advised to bottle feed since I had it on 1 of my nipples and it was as stubborn as hers, she has refused the breast after getting better and literally gags at it. Before that her latch was perfect. Even after her latch was fine but she would gag time and time again. She does drink pumped milk so it’s not the milk. My breast are clean, nor do I use fragrances on my skin. I’m coming towards the end of my frozen supply and my boobs dried long ago. She’s 5 months today and all I want us to be able to breastfeed. Am I asking for too much? 😭😭