Feeling pretty stuck at V3

Hi, I've been bouldering for about a year, although have always been more of a top rope climber (climbing around a 5.10a/b).

My local gym is only bouldering so I'm trying to get better at it but for the past six months I've been stuck at around a V3 and it's been pretty demoralizing. I want to get better! V2s are pretty easy but I would say 80% of the time I can't get through a full V3.

Does anyone have any tips or advice to get through this block? I try to attend yoga a few times a week but I'm wondering if I need to start a lifting/gym routine to get past it (and I'm lost around weights). I'm 5'8 woman.