sip a shot glass of liquid every 15 minutes. after an hour if you can keep all 8 oz down you can introduce bland carbs, like 1/4 slice of toast or 1/4 cup of dry cereal like cheerios. if you can keep THAT down for an hour, try a spoon or two of applesauce or 1/4 banana. move slow, your stomach may still lurch a bit when food touches it.

if you can keep food in for 4 hours you can start the BRAT diet in full, increasing food (bananas, rice, toast, applesauce). you can also add plain pasta (no topping, maybe a sprinkle of parm cheese if you need it), a smidge of peanut butter on the toast or some jelly. by tomorrow you can go back to normal except I would avoid heavy dairy, spice, meat, etc.

I hope that helps. Don't push it, listen to your body. if you push too fast, you can v again just as a reflex. so go slow and take it easy today.