You will simply enter your child as the covered party in the 1095-A section and do not enter anything of the dad at all. Then fill in the lines 21 - 33 as written on the form and pick the allocation percentage that you and the other parent have agreed to take since the IRS allows you to decide how much of the PTC will be claimed on each return as long as it adds up to 100% between the 2 returns. If you and the other parent play nice you can both win.
