Gym adjustments

I have been on semaglutide since April and have lost about 15lbs bringing my total loss to 40 pounds (lost 25 pre glp), but now that im more active and able to work out and go walking regularly and things like that, the scale suddenly jumped 8 lbs. And I know ppl say its because we gain muscle and thats fine but um... if more muscle means more fat burn potential when can I expect this to regulate and my weight start going back down? I have PCOS as well so the fluctuation is so scary for me because sometimes its fine and sometimes its the PCOS fighting back and I just dont want to start gaining again.