I try to donate at least equal to that monthly amount.
But my very meager and very erratic 'income' from kind gifts and teaching one class a semester makes it overly difficult to be locked into a rigid monthly subtraction.
I do cheer all on to that rather minimal ideal, though.
You donate on a regular basis, when you can. Thanks.
Our appeal here is for those with a more stable income, to become monthly donors.
Some do that with their monthly loose change collection.