Hi every bunny!
New bun mom here with a question. *A similar question may have already been posted in the forums however I am at work and do not have time to sift through and find one which is similar in situation****

Annabelle, my holland lop, was on an all hay/greens diet in June and the beginning of July, as I was worried she was putting on excess weight from the pellets.  Her poops became much larger and healthier looking (not black, crumbled when stepped on).

A few weeks ago I started her on pellets again as a treat.  Half a cup a day, which dwindled down to a few tablespoons, as I noticed her poops becoming smaller and darker.  However two days ago, I noticed VERY SMALL poops.  There were still some regular size ones, however they too were black. As off last night she was getting only a tablespoon of pellets once a day, and she was in a great mood, eating, and drinking normally.
I am at work now and haven’t had time to see her since early morning, however she seemed fine, and looks to have pooped.  I also saw her drinking water, and her dewlap was wet from getting in the bowl, hehe

Firstly, how serious is this current condition? and second, how do I treat it to prevent progression to GI stasis?
when I am home I will be giving her kale, an apple, and ensure water/hay are being consumed.
IS THERE ANYTHING ELSE/TIPS/TRICKS THAT WORK FOR YOUR BUN?

I also have some senokot pills and was considering giving her a little, mushed into some pellets.

While i’m on the topic, what would be a good emergency bun box?
-what over the counter drugs could be used by a bun
(ovol, tums, pepto bismal ?), and any pain meds?

and second, other than diet, is there anything I can use to maintain a healthy GI tract?Something I could give her once and a while as a precautionary measure.
for example I take probiotics.Can bunnies?

Ive heard of critical care, and benebac, however before I buy those, and for tonight when I see her, what else can I give that is human/over the counter/easy to get!

thanks from me and anna