Re: Legal Father Is Not Biological Father - How Do I Change The Birth Certificate?
You'll need to start a paternity action anyway, so you might as well do it. You'll need a court order to amend the birth certificate, and while you're in there ask for a custody order, the court to issue a visitation order and child support.
And yes, since everyone you slept with during a period of time needs to be DNA tested (they should be demanding a DNA test), it will probably be a long drawn out process. And if you test someone and they turn out to be excluded, they should be coming after you for the cost of the DNA test.
If you wanted babies all to yourself, you should have created them by yourself. Until you do that, children have the right to BOTH parents, especially since you found them suitable to procreate with.