Move a scheduled workout day to a previous day

Hi,

I created a custom routine from some FB videos combined with some yoga videos outside of FB. On some occasions, if I feel like I can do workouts of two days in one session, then there is no way of moving the future workout day to the previous day.

To explain more clearly - say I do day 10 and day 11 of a routine together on the same day, then can I reschedule day 11 to a day earlier so that I have the workouts of day 10 & 11 on the same day on my calendar. This way I can mark them complete at the same time on the actual day that I did them instead of marking day 11 into the future, if that makes sense.

I'd be happy to elaborate in case I made a simple query unnecessarily complicated. Apologies in advance if so. I'd be happy to get any feedback on this request though! Thanks!