What to do is highly individual. First, congrats on hitting your goal! Now what I’d do is re-evaluate. Is this weight ideal for health, your joints, your body composition? I carry more muscle than most people that are 5’9" so at my current 210 I’m still not fat or even chubby… pretty much “normal” but for most at my height they’d be fat most likely. Scale weight doesn’t matter as much as body composition. My path was higher protein and more carbs. I eat ~200g per day of protein and average around 60g net carbs daily. I’ve been able to put on more muscle much easier and still loosing body fat, actually faster than I was prior do a more strict keto approach. But me of a couple years ago would have went off on a binge doing this so you gotta consider that as well. For my my cheat meal would be a cheeseburger on my low carb bread or hamburger roll(real one’s not copycat things with weird consistency) and sweet potato fries. It wouldn’t be chips, salsa, burgers and fries at a Chili’s. Even your cheats can’t be crazy! Having a little extra and asking for a problem are two different things.
You’ll also start to learn how you react to different foods. For me, I can go to an Italian Restaurant, eat bread, pasta until I’m stuffed. NO problem! Right back to business. If I eat a slice of Tiramisu for desert or chocolate cake??? Gotta chain myself up in the basement for a couple days to detox and stop me from ripping up my carpets and eating them! Me and the starchy carbs can play nice, the sugary ones not so much! You just gotta learn you!
Also, if you’re gonna test things, weigh yourself daily. The normal fluctuation in weight won’t matter as much but you need to see trends in progress 2,3,4 even 5lbs if your carbs are up is fine. But when it’s 8,9,10 you have a problem and need to course correct before you have an issue on your hands!