If I wanted to buy $1,400 of bitcoin every week, should I buy $200 a day or should I buy the $1,400 every week?
Any options will be greatly appreciated.
Depends.
If you buy daily, you'll pay x7 more fees to the exchange. Might sound not much at first but that's x7 more fees every year and they do add up quickly. Other than that It won't make much of a difference.
Some people don't want to check the prices every day so for those people buying weekly is a better idea.