I appreciate the advice.
This morning, the hay looked wet where she might have peed, but I'm not sure if it was diarrhea. I called the vet and was able to get in at 10 AM.
I went to the vet where the man there checked both the mom and kit. They weighed them both and even said the mom had gained weight (she weighed around 550 this time). The kit had obviously gained weight since the last visit, but I showed them how she had only gained one gram in the last couple days. They checked the mom's nipples and explained that they don't seem to be stimulated and aren't producing much milk. Other than that, the mom seems fine. They felt the kit and said she feels full, and they asked if she had been eating hay and other foods. I said she had been nibbling on some hay but I see her nursing from the mom often, but apparently nothing is coming from that.
The vet told me to give the kit vegetables like romaine lettuce. He also mentioned apples, blue berries, black berries, and kale but told me to give very little, about pea size amounts. He told me that I should soak pellets in water (I give Oxbow pellets) and try to give that to the kit by putting it in a baby food lid. He said I could also give the kit critical care. Other than this advice, he said they both looked fine. He said if it nothing improves that I should return and to start supplementing milk.
After this I asked why I was given Baytril (he was not the one who gave me this since he was not in that day), and his reply was to help with digestion. I read that Baytril was a pretty harsh medicine and found that answer unsatisfactory. He said when he saw her the next time she was brought in he said to take her off the Baytril (which we did) because her stool was no longer that soft.
I didn't get a single answer that I believe to be true or with reason behind it. Seeing that she was growing considerably until a couple days ago, I don't think that the kit is doing well. She is still active and curious, but her not gaining weight is an issue. I don't know why the vet didn't consider giving her supplement milk, but I feel like he should have at least made it an option.
Are vegetables a good idea at this point? I'm not sure if they have the right nutrition for a kit, and going from the mom's milk to a blueberry seems quite different.
How much Critical Care should I start giving her for now if I should start doing so? She is now 87-88 grams at 18 days old.
Should the mom receive Critical Care as well?
I care for both of their well-being's, but it's just frustrating that the vet seemed to not care and took it lightly after reading that this can be serious if nothing is done.