Roller Derby - it takes more than once a week practice!

I joined derby in 2012 and pretty much tore my PCL right off the bat. I tried to keep skating for a few years, even attended a Roller Con in 2013, but eventually gave up as I watched class after class pass me. This year, 2017, I moved to a new town and thought that I should try again! Much to my surprise, I made the team. Bouts and Scrimmages are great, practices... not so much. I’m 51, over weight, diabetic, and have two knees that never really healed. I realized this week that once, or even twice a week practice just wasn’t enough to keep in shape to keep up with everyone - especially the younger everyone’s! I’m back at the gym three times a week, and was hoping to find others with similar stories for support