What is the best method for DCA Bitcoin? What platform are you using?
It must be cheap.
The thing you should focus on is security, deposit fees, and withdrawals, don't try to look for fees for security because you could end up losing your money.
you can use exchange that provide cheap deposit fees >> buy bitcoin >> convert it to cheap withdrawal altcoin >> send it to other exchange >covert it to bitcoin >> withdrawal
Where do you live and how can you buy bitcoins? If all payment options are available, some options may be more expensive than others and vice versa.
DCA strategy is considered successful in the long run and what increases its strength is buying in large quantities at the bottom.