Butt reduction techniques?

So I am an extremely bottom heavy girl. Not overweight, I just literally carry all my fat on my ass. My arms and back are a LOT stronger now from climbing, but with the size of that thang I’m starting to feel like I will just never progress beyond a certain point in climbing,, which really frustrates me. I thought I would get slimmer or at least more compact from climbing, but if anything it’s just gotten thicker😭😭 Every professional climber I see has like, no ass on them and at this point I just feel like my lack of progress must be due to my body shape.

Any tips, training/diet advice? Do I straight up just need to lose weight?

Or - any words of encouragement from bottom heavy gals climbing hard grades?