At the moment my study and work commitments take up so much time, so unfortunately I don't get to put as much time in as I can to attending classes or even training, especially since I'm still relatively new to Wing Chun (about 4 months now).
I normally attend one saturday class that goes for one and a half hours. During the week, I try at LEAST to do some stretches and sit ups, or if I am not feeling too tired, I'll try to replicate the usual warm up/stretches at the beginning of my class and go through the form, and after that I try my best to recall the punches and kicks I learned from the previous class, but at this stage since I'm still learning them, I'd rather not put too much time into that only to find out that I've been practicing it wrong.
But I am considering jumping to two back to back saturday classes and possibly an extra one and a half hour class during the week if I can manage. Even though everybody laughs at me I take my training very seriously, although I still have a loong way to go.