The Church doesn’t have a position on that.
In general, we are to materially support the church, particularly our local parish. It is a serious obligation.
The Church doesn’t tell us how much to give. Stewardship consists of time, talent, and treasure. If you need to reduce your monetary support for a couple of months, and have discerned that through prayer, then perhaps consider ways to give more time and talent.
Also consider other places you can reduce spending before you settle on reducing your charitable contributions. Perhaps you have some other expenses that can be reduced first, or some extra income you can earn to put towards debt.