Her smaller brothers aren't that fussed on learning at home, and my sister who can be quite prim and proper and wants the best from the kids has just left her 5 year old to it as she doesn't see the point in stressing him out over it and having all the tantrums in the house, she does little bits with him but she hasn't gone above and beyond like we all thought she would
Kids are probably better off being stress free through all this anyway, plenty of time to catch up.