I found the best way to prevent this is to have a very tiny of portion of food, like one bite of something to get the digestive system going again without overwhelming it. Then after an hour or so you can eat your refeed. Your stomach may gurgle a bit but you won’t get the sensation that you are about to pee out of your butt hole.
Your bowel movements should be patterned like that if you’re healthy. Eat -poop-eat-poop- eat-poop rinse and repeat. This is precisely why I always make sure I will have access to the Jon whenever I do refeed. Last year when I was a novice at fasting, I re fed at my gfs parents house, first time meeting them. I didn’t want to be rude or come off disrespectful by not eating so of course I ate. However, they had Mexican. Needless to say top 10 worst decisions of my life