I've been using it for a week now and I'm a little disappointed in only one thing: if I wake up early and press the cancel button, I don't get my star! If there

I've been using it for a week now and I'm a little disappointed in only one thing: if I wake up early and press the cancel button, I don't get my star! If there is an option to say, 'give me my star if i sleep x% of the total alarm time' I'd love that. I get woken up by kids, birds, whatever, very often and I'm afraid I'll never get a constellation at this rate.