I ran into the same wall when I was doing side work on weekends, paper was great in the moment but the Friday retyping nearly killed me. What finally stuck for me was a hybrid thing, quick voice notes on my phone during the day for times and counts, then dump it into a real log at night or the next morning when I actually had five minutes. The paper notebook stayed in the truck as backup, mostly for when my hands were too gross to touch a screen or the signal died. It took me maybe a month to stop forgetting to record stuff, so that rough first stretch is real and not just you. Your mileage may vary but going half and half saved me more time than either one alone.

The old guy basically told you that you were doing it wrong and then walked off to go drink coffee for an hour. Next thing you know he'll say the impact gun never leaves his hand either.