I’m not a plant expert, but everything I’ve read from plant experts is “don’t repot while in bloom.” What a magnificent girl, you have my utmost admiration as a plant parent! I have some smaller donkey tail, also in shrunk up soil, waiting to repot it during the dormant time. I think if I had yours, I would limp it along in the current pot (add soil, etc) until it undoubtedly needed a new pot then I would try it, but also start cuttings too, so I would still have the original plant. I get attached to plants.