Oh my I am so sorry this is happening to you. I had at least 6 months of this, day in, day out. They tested me for a stricture but found my stitch line was swollen and inflamed and although I could swallow liquids slowly, solids were difficult. Now I still take Lansoprazole twice a day and antacid when I need it. It sucks to be the 1% that has difficulties.
I found that artificial sugars, some protein substitutes, rich meats and iron in the vitamins were not for me. I didn't reach my liquid or protein goals but my team were sympathetic and monitored me. I was told to focus on drinking. I tried to eat 6 - 8 tiny meals a day. Every time I had a day of vomiting I would go back a step to liquids. I had a lot of thin soups, tiny slivers of cheese and milk. I tried to eat as clean as I could which wasn't hard with the tiny little amounts of food I could eat.
I am occasionally sick now but its because I overeat, forget not to eat grape skins or eat too fast. Now I just give my stomach a days rest and continue. I am used to the feeling of pre vomit and I will usually deal with it. For some reason a popsicle sometimes works