I have three teenagers. They seem to be stuggling with online school. How can I help them when they do not want my help? ?

One is in college, one is in high school and one is in middle school.
My college student, he tries but is on the line of giving up. Because all his friends got jobs but he went to college. 
My high schooler, writes notes 7 days a week, hours at a time for her classes, but it seems that she made a 55 in her first quarter and feels like her teachers are out to get her. I'm lost. 
And my middle schooler. Has almost gave up. My pestering him is not helping him at all. If I sit down to help him he either falls asleep and I'm finding myself doing his work. But I never do his work by sending it in. I want to help him but he don't want to do it. His last assignment was an easy essay on a dinosaurs. The teacher even gave him what to put into the essay. 
He wrote one sentence and spelled a word wrong. He does have a reading problem and has an IEP. But I can not let him give up. I'm lost. Any ideas, greatly appreciated.

Pearl L2020-10-29T01:22:23Z

maybe you can get them a tutor to help them