If you ask me, it's a very stupid idea to buy Bitcoin every week, it's better to wait for the bottom of the price and already invest then just to follow the price of Bitcoin and wait for much more profit.
I think its not, but some things I agree with you, when you bought bitcoin last year you bought it as $3000 and now it is $7500. You may double it in about a year only, also I did not agree on every week because as what we can see it keeps on decreasin and increasing .