bi-weekly with paycheck just to minimize fees. Why attempt to time the market daily when buying now results in BTC that’ll be worth more in 10yrs? what does a week or two matter at those time horizons?
If I were waiting tables and getting tips daily I might consider daily, but that would be lot of overhead work for very minimal gains.
I think the very question of “how often should I DCA?” may even represent more mental work effort than is necessary. Set it to what frequency you want and forget it. Don’t optimize yet. You need F-U fiat levels of money to be worth spending time agonizing over frequency of buys.