Best of luck on this journey.  I had a friend who had gastric bypass and said protein drinks were all she could handle at first.  She worked in pureed foods later on but mostly bland.  She said mashed potatoes were easier on her stomach than rice and any fatty meats were rough.  Basically she lived on pureed chicken and mash potatoes for about a year.  She said spicey foods or very greasy foods she either gets sick from or if she eats it she knows she will pay for it later.  Overall she did well and lost about 130 lbs.  She did say she had a lot of hair loss from her body not being able to process nutrients the way it used to, but overall she was happy with the results.  Maybe check out tik-tok there seems to be something for everything on there.

I had gastric sleeve surgery about six years ago. Lost about 100 lbs, but gained back about 30. Still a nice net loss. I would like to lose 10 pounds, but I don't stress about it. Never lost my taste for junk food, unfortunately.

I did really well post surgery. Just follow the plan for reintroducing foods slowly. Honestly I am still so sick of protein drinks that I can barely look at them, but they were necessary.

I can usually eat an appetizer for my whole meal, or split something with hubs when we go out. It took me a while to figure out how much I could eat, as my whole life I always wanted more no matter how much was on my plate. So that's really nice.

I do still get nauseous from greasy food, but that's a benefit!

PM me if you want to talk, any time.

My Mom had gastric sleeve surgery 2.5 years ago. She lost 80 lbs and has maintained that weight loss. She will say that she struggles still with carbonated beverages and she doesn't like drinking out of a straw - causes reflux, but otherwise, she is very happy with her decision. She had many health conditions like high BP, water retention, and autoimmune issues that have leveled out since she had the surgery. 

Greasy high calorie foods still make my DH Sick when he consumes too much, it's been 10 years since his surgery. VITAMINS are incredibly important! Especially iron! 

I went to Mexico July 3 and did it. I had the sleeve. I have had zero complications but I have only lost 30 lbs. My BMI was 35. Every one of my surgery brothers and sisters have lost double that . I don't know why I am such a slow loser but I am. I hope this means I won't have the loose skin problem or the gall bladder problem.

I recommend My Level 10 Life on you tube . I ate a lot of Greek yogurt and Ricotti cheese bake

DH had gastric sleeve surgery 11 years ago. He lost 180 pounds, I think, but he's gained about 50 back (he probably got too thin with his initial weight loss to be honest - he looks gaunt in some photos). Initially he mostly ate protein shakes, which was not the most healthy. He now eats almost anything, but in smaller amounts. He also had his gallbladder removed, so high fat foods cause him problems. He also gets very full after eating red meat and has problems with acidic foods. He's not always good about not eating too much, so some times he still has problems with vomiting after meals and that's ruined his teeth, but I think some of that might be related to his adhd (impulse control). He used to be better about exercise, but got lazy after he and I entered into a serious relationship. I will say that BM had some sort of weight loss surgery around the same time and has gained most of the weight back (if not more), so it's not permanent. Also, because DH lost a lot of weight pretty fast, he had problems with loose skin around his midsection. 

One suggestion - if you haven't had your thyroid tested, make sure that your weight gain is not linked to thyroid issues. I've gained weight in recent years and had trouble losing it and come to find out I have a very underactive thyroid. Some doctors are very good about testing and I assume that if you are approved for weight loss surgery your thyroid has been tested, but if not, it's worth looking into.