How much hours per day need for drawing %%The more - is better, of course%% and what tools you use to track spended time?
I use a pomodoro timer, set 30 minutes instead of 25. A few hours every day.
The hours don't matter if you're not doing something to improve. I could draw lines and boxes for half an hour and learn nothing from it. In fact a lot of the time I tracked was spent on mindless doodles, because I was avoiding studies. This is just comething you should keep in mind. Don't forget to have fun, but don't waste too much time on things that'll get you nowhere.