Been there, done that. YES you can reset your pouch by going back to basics in terms of food portions, tracking, protein, water, and exercise. YES it can be done. I just lost 25 pounds since October after gaining weight during COVID.
Don't be like me, though, because I skipped an appt with my surgeon and nutritionist because I was embarrassed about the weight gain and didn't want them to see me. I should have gone anyway. That's what they're there for, to help and guide us. So please go to your upcoming appt and just accept any advice they give.