I’ve already started using PrEP; what if I want to take my pill at a different time?

No problem! For example, if you decide to start taking it before bed rather than in the morning, just make the switch. On the day you make the switch, you can either take a dose in the AM, and then again in the PM to get on the new schedule, or just skip the AM dose and take it in the PM to get on the new schedule.