I went down from 390lbs to 240lbs gradually over 5 years. I have maintained a weight of 240lbs since then (6'1" tall).

The first year was the most dramatic loss of 100lbs. I was miserable and didn't know what I was doing other than counting calories. The rest of it was more considerate of total nutrition, and that's what made my good eating habits stick.

I say this because while I'm not a doctor I think GLP-1 is probably unnecessary for the vast majority of patients. Better food and information is more available than ever before.

I would strongly advise to watch your A1C and get out of the diabetes danger zone if you are. Most people can drop a few percent in as little as 6 months and it makes a massive difference in mental health. Blood glucose has a direct impact on the brain and overall cardiovascular health. If you drink alcohol, you might want to take a break also to let your liver/kidneys/pancreas do their jobs properly and restore insulin sensitivity and other hormones. Look into the "fruit paradox", and more generally get a good salad in for lunch to address nutrient deficiencies. Not crappy salads either. You're not a rabbit. Treat them like the amazing sandwiches without bread that they are.

Sounds like old advice, because it is, but I find people aren't listening because they want to more deeply understand why to do it and what the effects are. Convenience and unintuitive pricing are false bargains that get in the way of healthier habits. Focus on nutrition and not quantity. Change your groceries, change your life.