Basya Tsybukmakher
There is special merit in giving tzedakah repeatedly. The great author of the book “Tzemach Tzedek” advised giving tzedakah every hour during an epidemic!
The point is not simply to give more tzedakah, but specifically to give it repeatedly.
For example, if someone can set aside 200 dollars, let him divide the amount into 200 separate donations — this counts for him as 200 fulfillments of the mitzvah of tzedakah.