5 overnights a month require more than 400.00 a month with one child. If that is all he wants to be around for his child than he must pay more. Look to the child support calculators on the net and figure an amount more appropriate for the circumstances. You only have one chance to get this right and the time is now. You are setting yourself up to pay for all the meals and all the extras without any help. At least PM me so we can work forward in this your looking way wrong on this experience of divorce he needs to be a parent if not in the physical sense than the financial sense