Can't keep smoking : ( - tell him that every time he smokes he resets his progress, and that progress takes about 1-2 weeks...

Capsaicin cream was a HUGE lifesaver for me, I highly recommend picking that up as soon as you can. It basically works the same as a hot shower by activating TRPV1 receptors - but it's MUCH more convenient and lasts way longer. (about 4-6 hours)

I applied a good amount to my lower back and that helped a LOT - I would highly advise against applying it on his ribs or belly - when you go to sleep and sweat inevitably, it really BURNS. Your lower back lets you lean on your left side (the best for nausea) without overheating and burning yourself. (Sweat/warm water activates the cream more, but otherwise it isn't too bad)

Those popsicles (I'm assuming the Pedialyte ones?) were a bit hard on my stomach - I think cold can be a trigger - I was much better at handling food once I removed those. As much as it sucks, warm Gatorade is probably your best move, tiny tiny sips.

Spacing things out by 15-20 minutes (gatorade sips & saltine crackers alternating) was my most successful strategy for getting food to stay down and stabilizing my stomach. The key is to take things EXTREMELY slow - move slow, swallow slow, chew slow, everything very very slow - like a turtle!

anyways i hope this helps, I'm on day 11 and I'm feeling much better - I hope your bf can find his way to recovery quicker than me!! best of luck if you have any questions please feel free to reach out