I work 6-7 days a week myself so I know what burnout feels like. My advice, Mini vacation wherever you can get them, That's what I do. I dont know if it'll help you, but I turn any device that someone can get in contact with me off, sit down and watch some old,very bad anime, boot up the ps1 or ps2 depending on what I feel like playing and tune the world out for a couple hours. In my experience, even a couple hours after work every day helps me, but at the same time I have very few familial obligations, so that may be easier said then done.
TLDR: version, make time for yourself to do and think about nothing is my only real advice.
Thank you. :)