My female bunnies go through false pregnancies. They get grumpy and hormonal. They hide and don't eat a lot. It's all normal here.
I personally wouldn't feed your bunny celery, at least not daily, and definitely if your bunny isn't eating her pellets.
My mature bunnies don't eat as much of the pellets as they used to, so perhaps yours is slowing down as she matures too.
In my opinion it's more important your bunny eat more roughage like hay to keep her guts moving and healthy. Bunnies can get a hairball that can cause a blockage, so keeping stuff moving through is important.
My bunnies favorite treat is willow branches which is another good source of roughage.
I personally wouldn't feed your bunny celery, at least not daily, and definitely if your bunny isn't eating her pellets.
My mature bunnies don't eat as much of the pellets as they used to, so perhaps yours is slowing down as she matures too.
In my opinion it's more important your bunny eat more roughage like hay to keep her guts moving and healthy. Bunnies can get a hairball that can cause a blockage, so keeping stuff moving through is important.
My bunnies favorite treat is willow branches which is another good source of roughage.