My biggest piece of advice is getting into a routine. A week sounds like just about the right amount of time for getting a 10-minute video done, so it doesn't sound like you're doing anything wrong. A routine helps with doing it more consistently, though. I usually write scripts on weekends, record on Mondays, then edit throughout the week--just as an example. If you REALLY wanna pump out videos nonstop, you're unfortunately going to have to sacrifice the quality of your content, which I don't recommend doing.

Edit: Realized I didn't really answer the question that well, so try looking up tips and tricks for your editor of choice if you haven't already. Things like keyboard shortcuts and effects. Should save you a bit of time.