I'd typically take all this advice with the understanding that they're all selling things in some way, may have a radical leaning for engagement and would calibrate my behaviors accordingly - but things being as you've described, i'd say really internalize it.

Ken Berry is very much an advocate for full carnivore, even if you can only afford hot dogs and says that milk is useless for anyone beyond breast feeding age. Of course grass fed/finished meat, ethically raised animals is the best way to go.

Snacking on bacon, pork rinds. High fat content will help stave off any cravings hunger and sugar cravings.
I do one meal a day, assisted by a bulletproof type of coffee: grass fed butter + mct oil, I do grass fed ghee + coconut oil.

You have a tough path ahead, but its a path nonetheless.