I made a change to go to bed when the kids do, i.e. around 8-8:30 and wake up naturally, which happens around 4-5. This gives me the same number of hours to myself as if I were going to bed later, but: they feel more productive because I am freshly rested, I can sip my coffee, and don't fall to the same distractions as at night. At night I feel my brain is a bit tired and more susceptible to just giving up and watching a bunch of TV or playing games. Also, at night there is no hard stop so I often end up eating into valuable sleeping hours.

Easier said than done though, been meaning to do this for 20 years and only managed to do it now.