$10 a day is enough, IMO. But we need to add more years for it to see a significant increase in the price of Bitcoin, probably three to four cycles of continuous DCA-ing of $10 every day is enough to give us a good profit and probably can earn us millions of dollar if Bitcoin price keeps on repeating the history of recording ATH every 4 years
In my opinion, investing every day might be a little too much and strenuous. Considering the amount of transaction fee, I wouldn’t want to invest only 10 dollars for it to be reduced more because of those fees.
I would say just keep the 10 dollars and buy it at the end of the week.