You don't need a 'schedule'.
Work out on your days off.
It really isn't more complicated than that. If you're not able to do even a walk on work days, then just work out on your days off. It's better than nothing.
On the days you DO work out, include some ST and some cardio. Switch up which comes first - maybe alternate. While some of your DVDs may say they're a daily plan, skip it and do it when you can. It won't matter.
Exercise has so little an effect on your goals you only need worry that you're getting "some exercise", not so much the quality and duration. If you are afraid it will affect your diet goals, look at food, not exercise. That has a much more significant effect on your success.
Deb, in New Zealand