If you think you can jam enough content from two days into one vlog, do it. But if you feel that one vlog will be too long, split it into two separate ones.
If not, continue recording on Sunday and make it a weekend vlog. If you do have enough on Sat, make another vlog for Sun.I'd do the same.Honestly, don't give it too much thought. Just pick up the camera and start recording. If you feel you have enough at the end of Sat to make a video, make one!If not, continue recording on Sunday and make it a weekend vlog. If you do have enough on Sat, make another vlog for Sun.
Personally, I would just focus on getting footage over the weekend and edit on big vlog - but that is just how I would do it.