What is the best way to DCA into csspx since no fractional share is allowed?

For budget of usd 200, I can only buy 1 share each month. Then I won’t be able to fully utilise my allocated budget. And it doesn’t make sense to just buy 1 share a month as I wont be able to take advantage of the concept of DCA when same amt of money will allow you to buy more during dips.
Thanks for sharing your insight!