Yeah I try to measure as often as I can due to compression. I learned this lesson in March 2018 during the snowstorm that knocked down trees and took out power.
I luckily went outside to measure and recorded 10.5. Then I went back out about 45 minutes later cause it was still snowing and suddenly I measured less. So even though the snow was still falling the lower rate combined with the heavy water content compacted it when I assumed it would have increased.
If I had only measured at the end I would not have gotten the correct highest accumulation for the storm.