If you are reading this, there is a good chance that your sweet angel is driving you nuts with tears and/or shouting about finishing school work. Don't give up on your homeschooling efforts yet! If you are anything like I was... I needed it to work for my son's sake and was at my wit's end some days.
Have them create their "own" schedule with the work they need to get done. Include play breaks and errands in there, and experiment with adding time blocks. Having a solid sense of how short something should be helps reduce the overwhelm up front. Controlling the order it all goes down may be part of the massive relief. My son likes to save his "best for last."
They will feel more and more motivated to finish when they see how much is already done and how little is left. C'mon, can you honestly tell me there is anyone who doesn't like checking stuff off their to-do list? My sister-in-law once told me that she adds stuff to her list just to feel the joy of crossing it off. :)
P.S. This also works wonders when you have a full day of errands to run!