My wife has been 100% WFH since the start of the pandemic and the biggest thing I can do for her is encourage her to get out of the house. It is so easy to stay inside the house and basically never leave. Going for a walk, driving around and seeing people out and about, sitting alone in the park for a bit... things like that really help get her back into a better headspace.

FWIW, I'm forced to work in the office and I'm also feeling incredibly burnt out and unproductive.