Last year I got down to roughly 115lb abs 6ft due to a combination of job stress, alcohol related gastritis, then when I used weed gummies to quit the booze I got cannabinoid hyperemesis (1 year no booze now, about 6 months no gummies. Might try one or the other again at some point but I'd need to address my lifestyle and job stressors first).
I went to see a gastroenterologist and their main advice was just to take the opportunity to eat terribly, or at least, what would normally be considered terribly. Normally calorie dense foods are ill advised because they lead to obesity but if you're having trouble keeping on weight they're exactly what you need.
I basically wound up living off snickers bars for a few months. Rock climbers actually use them for the same reason; there's a looot of calories packed into those tiny bars, and a decent amount of it is fat / protein compared to similar options (maybe payday bars if you really wanna up the protein factor). The caveat here is that I also have IBS, so I needed to take Metamucil / psyllium husk fiber as well to make sure my stomach kept functioning well / keep the chocolate and sugar from agitating my colon, which also would have led to malabsorption / not absorbing the calories, which would have defeated the point.
You can get the fiber in capsules to just take with water instead of having to mix up a whole beverage to chug, but if you do that you need to make sure you stay hydrated so it doesn't constipate you. I recommend getting a water bottle / skein of some kind that sits against your body well so it can stay with you on the move. I used one of those gallon bottles and would leave it on my work computer with a tall straw and just sip at it every time I stopped to chart, but it sounds like you might need something more around the size of a quart to strap to you.
Best of luck!
earlier yesterday my partner was talking about this and brought up that being incomprehensibly loud and horrible is the entire point. He's got a lot of buddies he's funneling money to in various ways and that money is then being used to amuse themselves with weird pedo shit and environmental destruction while destroying social safety nets and hoarding food, housing, and medical resources so that we can't do anything about it. His role in all this is to just be as loudly horrible and insane as possible so that that's the only thing people are able to see. It's specifically supposed to not make any sense.