Try taking the pill at the same time every day, but the actual time does not matter as much as taking it regularly around the same time. Typically, doctors suggest taking your pill when you wake up, before eating breakfast, before bed or at the same general time each day. Missing your pill by an hour or two will not reduce the effectiveness of your birth control unless you are taking a progesterone-only pill.
Progesterone-only pills, often called “mini-pills,” need to be taken at the exact time every day to be effective. If you miss that time even by three hours or more you need to use backup contraception for at least two days following the missed pill. And yes, more than three hours is considered missing a progesterone-only pill.
Birth control pills are most effective when taken at the same time every day, but that does not mean you have to base your life on the birth control schedule unless you are taking progesterone-only pills.