Prepayment/ Registration

I have never required prepayment in my daycare before but feel like I need to start going this route. I would also like to start getting paid the last two weeks up front because I have had parents skip out without paying before. So what do you guys require when a new family enrolls as far as payment? If a family would need to prepay me for the first and last two weeks I feel like most would not be able to afford it and move on. How do you all handle this? Do you allow payments until they get this paid off? If their number of days change at what point would you adjust their payment for the last two weeks?

[Michael]

Here are some more threads on Deposits: https://www.daycare.com/forum/tags.php?tag=deposits