I am 3 + years post op and have maintained my 90lb weight loss since then. I could really stand to lose 10 more lbs but have never been able to get it off.
My current diet consists of 70 grams of protein, 3 cups of veggies, 2 protein shakes and sometimes a vodka soda water.
Up my protein? I don’t eat carbs…maybe 20grams tops per day.

That doesn’t seem like much food at all. How many calories are you consuming? I stopped drinking protein shakes the week I began real food (week 8). I get all my nutrients in & hit my protein goal every day by eating real food only. I don’t even take multivitamins (haven’t since I was 8 months out).

If you’re not losing, you may be at your base metabolic rate. Have a look at some Dr Matt Weiner’s you tube videos on resetting your base rate. He has quite a few on this subject alone so you may have to work your way through the list of his videos.

I find his videos very straight forward. He has a book called a pound of cure & associated website which may be helpful too.

https://m.youtube.com/user/DrMatthewWeiner