Sorry I guess I misread it. Yes it sounds like they are wanting to drop one day not go down to one day. I would tell them that full-time is full-time and they are paying for the spot not for the amount of days they are there. So even if they don't send their child for the day they are still charged for it.

If they need to save money they need to look at their other bills and how they can cut down on their expenses (cell phone, cable, eating out etc). Things like daycare should not be at the top of their list for something to cut back on.

Stand your ground, don't take a cut in pay just because THEY want to cut down on their expenses.