From my experience, you're not supposed to be controlling your breath at all.
The idea of meditation is to just rest the mind on the breath. To let the body do what it does normally and focus on the inhaling and exhaling as a way to clear your mind of other thoughts.
10 minutes is more than enough to start with. After doing it for awhile, you'll find yourself wanting to increase that time, but just do it gradually.. maybe work yourself up to 20 minutes, but if you ever feel like you don't have the time, just make sure you're doing at least 10 minutes.
I, like you probably, think that it's not "too bad", but once you're away from this practice, you'll realize that you were wasting so much valuable time.
The idea of meditation is to just rest the mind on the breath. To let the body do what it does normally and focus on the inhaling and exhaling as a way to clear your mind of other thoughts.