Hey everyone, I've been trying to practice inside picking but I've hit a problem whereby I do my downstroke on the bottom string, then as I change direction to hit the upper string again, I end up hitting the bottom string again on my way up, leading to a very sloppy sound. Would anyone happen to know how to solve this? It really only happens when I try and play fast, because at slower speeds I have more time to "clear" the bottom string, if that makes sense.

Hopefully this diagram would help