Hmmm. So a quick loss followed by gradual regain. I'd say you're doing a bit of a sharp diet and then losing focus and backsliding. The cure for that, I'm afraid, is to simply make a more committed and planned change to your diet or lifestyle so that it's clear to you when you've broken it. And then make sure you don't. I'd suggest identifying a small habit or diet change that you can solidly stick to not as a thing to do irregularly or as needed but permanently. A genuine long-term change of habit. Maybe it's eating a leafy salad before lunch every day so you feel fuller. Maybe it's intermittent fasting or simply never eating past 9pm. I don't know what will work for you but it's plain that you're launching into a commitment then slowly losing it. Either identify something you can do along side it as a long-term improvement or don't try to crash diet so much if that's what you're doing.
LOL! Well, should help you stay motivated! You can be taken out when you've lost more weight?

Which I'm sure you will. What even is 200lb? 90kg! Is that really Death Fat territory?
Can you run two miles?