I didn't purchased them in the date you mentioned, but I had a similar situation in 2018. There were no regrets, but man, it was very painful to hold it in the red. Looking back now, I see it as a kind of "initiation" that everyone have to face at some point. Once it passes, you will collect the rewards in the next cycle.

The best way to hold is to not follow it. But it is hard when you are a beginner, you will be thinking about bitcoin everytime.