Yeah, that doesn’t sound like a lot, considering I got over a thousand on level 20. But whatever works for you! I’ll probably experiment with speed at some point again, to see if I can speed up without feeling overwhelmed or that quality of my reviews decreased.
I know of leeches of course and have a script to be able to review them. But I never got into habit of reviewing them and a lot of them didn’t even feel like leaches. But I definitely have a few I know off. I usually fix them by coming up with a better mnemonic or improving my visualisation of it