I’m sorry to hear this is happening. There are measures you can take at home to try and get a rabbit through gas-related stasis, but keep in mind if the cause is something else or if the severity is high enough, at home measures may not work: https://wabbitwiki.com/wiki/Gastrointestinal_stasis#At-home_treatment
Highlights from the link I want to emphasize:
1. No eating/pooping approaching 12 hours is an emergency and needs medical attention.
2. If force-feeding, first check for blockage using the GI Stasis vs. Bloat video in the link.
3. Provide warmth if your rabbit feels cold.
4. Encourage movement occasionally, even if the rabbit doesn’t want it.
5. Lay out the “buffet” of food– treats, pellets, the hay source (the big bag/box)… Everything and anything that’s enticing. When appetite returns, take away the sugary stuff so appetite focuses on hay.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.