A rabbit eats 6 hours a day and chews 120 times a minute. To maintain / promote that process, it is important to put enough hay and straw in the loft.
Gnawing and licking stones are superfluous. Rodents are bad for the kidneys, and the rabbit already pees out all the calcium, so if she gets too much in the form of rodents, then she forms bladder stones.
Sweets contain too much sugar, it is better to add vegetables in addition to hay, hard feed, such as winter carrot, chicory, little lettuce, etc. Not too much and in moderation. Bread can give a lot of gas formation, so only give a small crust. 5 grams of herbs and 1 to 2 flaxseed chunks per day are a good addition.
The rabbit has caecotrophs, or morning manure. This means that part of the indigestible food goes to the appendix. This is where vitamins B and K are formed. By means of mucus, thinner stools come out of the anus that the rabbit immediately eats again. If there are remnants of caecotrophy in the pen, it can have several causes, such as too much food administration, the rabbit is too thick or too stiff to eat it. It helps by giving more raw fiber, such as hay and thereby limiting vegetables and hard feed.
Also pay close attention to the rabbit eating. Because a rabbit is a prodier, the rabbit shows it poorly when he / she is sick. A dog or cat can do without food for a while, but a rabbit absolutely cannot. So if you notice that the rabbit is not eating for a while, give the animal mainly force-fed (e.g. critical care), so that the intestinal process continues. And of course also go to the vet for the underlying background. For example, the teeth can overgrow (elephant positions) so that a rabbit eats poorly or the rabbit is bad in his fur and therefore not comfortable in his skin.