Need help with weight loss. Stalled. Gaining fast

Need help with weight loss. Stalled. Gaining fast So a brief breakdown . I was 350 5"10 male. I was doing good with the weightloss I went all the way down to 291 with 1500-2100 calories a day. I have energy, I work out 1 hr a day to 1 hr 30. Clean eating 200gs of protein etc. I recomped my first 2 years of gym and stayed the same now im cutting and maintaining but I've since then stalled. So I was watching videos that say eat near your maintenence to heal your body and cut again so I started eating a little more around 2500 and got back to the 300s in the matter of days. Like bruh. Im not sure if I should just cut back again because I couldn't even let my body heal. The little more I eat the wayyy more I gain. I did a body scan and it says I have over 14 lbs of body water sitting in me. Not sure if that helps.