One of the best time “hacks” I’ve ever been given is to find the times of your day when you often fall off the rails or fall behind your schedule and note them.
Then build a short 15-minutes-at-a-time schedule for the day at those times.
For instance: I eat lunch around 1pm. I go home for that. After I eat, I could sit around with my kids and play with them for two hours and not realize I’d used up most of the afternoon. The solution was to schedule from 1pm-2pm to ensure I could get home and eat, spend some time with my wife and kids, and be back working in a reasonable amount of time.
Find the weak spots in your schedule and script that hour or two and you’ll be delighted that you save days that would have “drifted” away without some structure to help stabilize things.