You should call your Vet and explain what is going on. Ask them if they can prescribe you the food “critical care.” If you’ve never used it, it is a supplemental food that you give your rabbit by syringe if they won’t eat, or if they will they can just eat it. But you mix the powdery stuff with water and give it to the bun. It’s flavored, so when I had to give it to mine, she actually really loved to eat it! It was banana flavored and I think it cost around $30. But anyway… Rabbits need to be eating their hay esp to keep everything moving through their system! If she is not eating, something is definitely wrong. I don’t want to scare you, but my bun was totally fine one night. I was up late playing with her and she was totally normal. I went to bed for only 6 hours and when I came back in the room she had become lethargic and had diarrhea. Now that I look back on it, she was acting a little off, but basically she was her normal self! So anyway, my point is, this can happen so fast that you almost don’t have time! I really hope you can get the baby to the vet or at least get some nutrients in her. Is she drinking water? They may even need to give her water intravenously.
We won’t be able to fix her over the internet, and if she is going on like this, it’s been what? 3 to 4 days now? She needs some special attention. Please take her to the vet or at least call them. I hope she is okay!