Is it okay to slack off at my hybrid internship if nobody gives me work?

I’m at this internship that’s good, but the first few weeks have been very slow. I’ve done as much reading as I can, and most of the time, when I ask if there’s something I can help with, they usually set up meetings in the future, or give me something that takes an hour. I have asked multiple managers multiple times, and now have nothing to do until my meetings tomorrow. I can prepare for those meetings I suppose, but other than that, is it okay if I slack off while I’m working from home? In addition to this, my primary supervisor is off this week.