Don't get into a numbers game on how many hours a day you practice. Most of us are well past our mid-teens, and we have to spend most of our time on doing things that put food on the table. These days I find that a few hours a week is all I can allocate to my guitars. But then, I haven't played for pay since the early '70s. It's a whole different world when you no longer have your parents subsidizing your lifestyle. Hang in there, beginner; it sounds to me like you're doing just fine. And any path that gets you to your goal is a good way to go.