Hi
Thanks for the post. Whilst I cannot comment on the childcare aspect of your post, you can get an indication of what the
child maintenance payments your ex-partner should pay by using the child maintenance calculator which you can find on the Wikivorce website, although you will need to have a good idea of your ex partners income in order to obtain an accurate figure.
The calculator will take into account the 125 nights that your son stays with his father as well as the implications on your payments if he was to have another child.
You may find this figure useful as a basis for negotiation when discussing your
child maintenance arrangements.