I play as much as I can personally. I'd say generally I play about 6 hours (I'm a student and get my work done before I go home, so I have plenty of time)
for weekends, it can really depend on the day. Usually, I'll spend the whole day trying to get through the VN, I like to finish VNs in a couple days so it's important I read as much as possible. However, I do have days where I take breaks and might not read at all.
I like to get immersed in the stories I read, and I just personally can't if I only spend a few minutes reading. Plus, I have 100s of VNs I want to read, so I have to be pretty dedicated. Makes me wonder what percentage of my life will have been spent on VNs.