Sounds like you should be telling us, based on their progress, lol.
I was up to 125kg in early 2024, the biggest I've been (used to hover below 100 previously).
I lost a little weight during the 24 season (just from working a lot and not being home to over indulge etc.) and after the high season's end I started walking daily and cooking tons of chicken, broccoli, cauliflower, cabbage etc, with tons of low fat yogurt.
I had lost about 25kg by the 2025 season start. Then some more during the season. I went down to 85 during this year. I was eventually running 5Ks regularly and just recently scaled up to 10Ks. Still do lots of walking too though.
Now I'm up to around 90 so I need to be very careful with food again, I guess I'll spare me during the holidays but yeah it's a warning sign cos I actually wanted to go down to around 80, not gain up again.
I'm middle aged I guess now and the last time I had lost weight (down to 75kg over a decade ago) I did it by again watching the food and going to the gym, lots of treadmill and some whatever exercises/program some trainer cooked up but that shit's expensive now which is why I just hit the road.
Everyone is different so if you see a doctor and they say something else is a good fit then I'd say go for it, whatever works, so long as you change your lifestyle and not rely on it forever. You could first attempt dedicating an hour a day to walking, some more later, that should at least burn one meal.
PS: I bought an air fryer since I was cooking for myself a lot and I'd say it wasn't worth it, I do use it a lot since I got it but it just functions like a mini oven really, I got very similar results just shoving the chicken or whatever in the oven previously, it's nothing like frying (though I haven't tried fries yet). Maybe it would be a better choice if I bought a steam cooker instead like I was debating at the time but I figure that may also disappoint me and I'll just be going oh well, it's a minor difference to just boiling my vegetables or whatever else instead but maybe not, I dunno, haha, just saying.