I don't hold spots open for them. If they want to continue sending the older one a min. of 3 days a week until mom gets some rest, then that's fine. It doesn't guarantee me holding a spot open for them. I find that most of my parents can't afford to go back to work after number 2 baby, as if they are not in school yet, childcare is easily $2000 a month for 2 kids(in my area)