Which brand of pill are you on? And how much of a diffence in time are you talking? Is it just a few hours or is it like more than 6? More info is needed.
Orsythia. A couple hours.
You should be fine. A couple of hours difference on a combination pill doesn't change the effectiveness. As long as it's not more than 6 hours difference then you should be fine.
If it helps you remember better, you should set your phone alarm to go off when you're supposed to take it. And you could always choose a better time that works better for your schedule to remember to take it better.