In my opinion you can do both day trading and holding. Day trading is mostly for coins that pump and dump.
For those coins that have potential in the long term can hold for a longer period.
For those people who want to get a profit everyday they are required to do both types of trading because in holding trading there profit are gain after a specific time and while in day trading their profit are gain at the same day and also if they have any loss in holding trading then their recovery will also require a lot of time while when doing both business then if one day they have loss then other day he will recover their loss and also continuing their holding trade with that.