An upset stomach only once a week? Sounds pretty good for a feeding tube. The longer you need or have to use a feeding tube, the more apparent and constant the problems. Christine's advice about watering down the nutrient formula is spot on.
It's true that both the bolus (medical term for using a big plastic syringe to push the nutrient into the feeding tube) or gravity (filling the bag and letting it drip down into the tube) require more time than hooking up to a pump during the night. However I toss and turn in my sleep plus I have to get up a couple of time to spit out the mucous or else choke to death, so haven't really considered the pump and therefore can not comment on it.
However with 6 to 8 feedings a day, I have developed some coping tricks. First, like Christine suggested, I water down my Jevity. Second, I wear an apron with a slit in it to slide my feeding tube thru so the little accidents and spills don't stain my clothes. Third, I "eat" with my wife, breakfast, lunch & dinner - (this is more a psychological trick to keep up our spirits) and fourth, I had them upgrade me to a larger size feeding tube (16 FR instead of the original 12).
I sincerely hope that your use of the feeding tube is temporary. Most of the posters here who tout the PEG would be singing a very different tune if they had to use it exclusively year after year.
IMO an upset stomach is the very least of any feeding tube problems when compared to leakage, granulation tissue, infection, replacement, blockage,cleaning - each month I discover a new issue. I hope you use is very temporary but Christine and I are living proof that any problems you encounter are surmountable and liveable. Keep swallowing as much as you can, even though you have the tube
I hope your stomach feels better soon
Charm