Assignments with the same due date out of order

I assigned my students 12 assignments which were picked from different Kahn classes to match our pacing curriculum, rather than assigning an entire Kahn class. The assignments i chose from the different Kahn classes were both videos and exercises and to be completed over a 3 day period.  We had a snow day so I had to make adjustments to the due dates moving each back a day and now all the assignments are out of order...

The assignments seem to be grouped in by the lesson "type" rather than in the order of the original Kahn classes. When i selected the lessons from various Kahn classes, I selected a "set" which includes a video or two, an exercise or two, and a quiz - there being an instructional video lesson followed by an exercise or two practicing what was covered in the video. and then an quiz on it.

please help. My students are powering through it, trying to watch a video lesson and then find the matching exercise lesson...but i dont want to do this again.