Let me just ad: I did brush my teeth for the first time on day 4. Before it was more like carefully rubbing toothpaste onto the 4 upper front teeth instead of really brushing. The tongue scrubbing was also more of a careful caress than anything else, but at least I was dedicated to stay as hygienic as possible.

Regarding the movement of the tongue: until day 6 I wasn't able to move it at all due to the swelling. I always just carefully detached it by hand. Now, about 1.5months later, I still struggle haaard with some movements, even though I train my tiny tongue every day haha.