To clarify ~ basically my practice varies depending on the need of my program at the time.

I have had times and clients for which I was willing to compromise to find a win win while on maternity leave ~ with one they paid me a minimum of 3 days a week to secure their space over the mat leave for the older child and they paid a deposit for the sibling to prebook the spot I knew was coming open in September at the end of their mat leave as I knew I was loosing a child to big school and they agreed. I had others with a similar scenario but that had an added ammendedment that if that space were to come open 'earlier' due to unforeseen circumstances that they would begin paying for it 3 days a week as well until the original September date OR they would forfeit that space and the sibling would have to go on a 'waiting list' because I had learned from my first 'compromise' nothing is 'for sure' in daycare and the client I thought was staying until September school left in June and I was out the income 10 weeks before the new sibling babe started.

Other clients my enrollment has not been able to predict a return and they have pulled entirely and gone on the wiating list ~ with one it did not work out and I could not get them back in and with another it worked out and the both returned and I have another mat leave who pulled older sibling for the leave but is returning this September with the youngest as sibling will be in school full time.

My point is you need to make your decisions based on what is best for YOU ~ they are terminating their current contact by asking to renegotiate it so if you do not WANT to than you are perfectly within your right to say 'unfortunately I cannot meet your new needs and therefore our services will be severed as of X date ~ if you wish to terminate early please note that 2 weeks or 1 month etc is required'