the piano and Philip Glass

I need to get back into the practicing habit. Albeit difficult now because I really only like to practice on a real piano and I can't play the piano at volume if there are people sleeping in the house, and right now that covers nearly the whole day. My brother goes to bed early, like 8:30/9 ish every night, even on weekends. My step dad sleeps during the day most days because he works at night. What time does that leave me with? I think that I want to re-memorize Philip Glass Metamorphosis 1 and 3, Ginastera, and Fantasy in d minor and work on that jazzy piece again. It's amazing that I still have muscle memory for parts of these pieces when I haven't played them in months. I love the piano.