I learn an hour in the morning before my office opens, an hour lunchtime, if not a court day, an hour at the close of business (with my sons and sons-in law in the office, and two hours in the late evening.
Been following this schedule for more than 30 years, except no sons-in law back then.
During the summer, I tend not to work afternoons and learn with my grandchildren who spend the summer in the compound