I'm offering prayers for you and your wife, DL.
Such a difficult situation you are in.
Has your wife met many homeschoolers? My husband was opposed until he met some of the excellent children.
Also, keep in mind that schools will soon enough mandate the shot and frequent "testing".
Not only that, but there are notices around the country that the school can and will send the child to a quarantine camp (medical kidnapping) if someone in the home has tested positive.
It's common to think that school at home must take many hours a day since that is what the "real schools" do. However, the "real schools" waste hours and hours of time on stupid and meaningless activities.
I once saw advertisements for an elite preschool in New York which fed into the "right schools" which is soooo important if you want your kid to go to Ivy League. It cost tens of thousands a year. They boasted small student to teacher ratio, big comfy chairs for reading books, cooking activities, etc.
Hmmmm.... sounds kind of like home to me.

Preschool and Kindergarten should take no longer than an hour a day for phonics/reading and math if that.
Read aloud time each day and listening to books on tape is golden.
Historically children would receive tutors into their home for learning until they went to university at age 16.
Assignments are given and reviewed when the tutor returns. It's not time consuming at all.
In trad parishes there are young homeschooled teens and young adults or parents even you can hire for a few hours a week to visit your home and tutor your children.
There are many, many tutors available for zoom learning online.
There are many computer programs and games as well.
Many, many ways to skin to this cat!