bro science guesses
chug a glass of water so the coffee has a good amount of liquid to fall into
also read that cold brew coffee is supposed to be less acidic and easier to handle for the gut
and also the obvious ones, limit the volume off coffee as well as the strength of it
I switched to half caf, and a medium roast. I can drink two 10oz mugs without an acidic-feeling stomach. If I’m feeling super coffee-needy I may have another cup, but I add in a small amount of half n half, which is dirty fasting, but seems to do the trick. Most of the time I’m able to pivot to tea and still get the comforting aspects of clutching a mug and sipping something hot while not irritating my stomach.
I like decaf black vanilla tea, peppermint and decaf or reg green tea. The black vanilla feels closer to coffee, somewhat, in giving a stronger flavor than green or mint.