I am a married mom of two, 7 & 10 both boys. I feel like my hubby is my third child sometimes
Just kidding. Kind of lol. I have a 4.0 so far in NS (finishing up the first semester now) and a 3.75 overall (would be higher but some was from old classes back when I didn't care).
I think over half the battle is in organization. I am an organizer, it helps me relax & stay sane.
Get a planner, color code your classes & write all your assignments & tests in it. I highlighted different classes in different colors, then bought matching folders to coordinate. That way you can easily see at a glance what is due when. That helps in planning ahead too (I'm also a huge planner).
Some of the kids I see struggling are pretty disorganized & I truly think that's a big factor.
Maybe get up an hour or two before your kids to study. That way you can avoid some of the guilt. I got up at 5am this morning to study for a patho exam when I would normally get up at 7am on Tuesdays. Take advantage of day light savings time & earlier darkness & make the kids go to bed early or at least have quiet play time or reading time in their rooms.
I've also implemented mandatory chores for the boys which I think is good for them. A dirty house drives me nutty, but when everyone pitches in, it helps get stuff done quickly.