I joined a band with a good reputation locally and similarly had a lot of songs to master. I knew most of the songs in general, few bits I wasn’t clear on, but knew I had to up my game with that band. Up until then I never used to practice bass at home, just playing what would do in whatever bands I was in, from then on I practised pretty much most days. And I’ve never looked back, so seize the opportunity and make the most of it, they chose you based on the abilities they’ve seen/heard, you’re up to it.