A few things help me.
Short commute, so no extra time spent getting to and from the office, and an electric bike that I enjoy commuting on.
Coffee and breakfast at my desk at work, not before going in.
Help at home - husband cleans after supper, and we have a biweekly cleaning lady so I'm not spending all weekend just catching up, can have at least a day to actually relax.
The people I work with are amazing, I like them so much and they like me and each other, it's a good group.
Taking all my PTO. I do a lot of Fridays off, and usually one solid week off at some point but using them to make short weeks/long weekends feels best to me.
If you really can't adjust maybe ask about doing the 40 as 4x 10hours not 5x 8?