It sounds as if you are trying to do the whole thing by yourself without an attorney.
I would advise against that.
I sympathize; but I still advise against it.
I predict that when you go to the clerk's office to file the petition, one or more people in the clerk's office will try to tell you you shouldn't do it on your own without an attorney. You may feel like that's alarmist falderol you needn't be concerned with because it is just part of the "machine" trying to suck you in. Then, when you finally get a hearing with the judge, the judge will also say you need an attorney and won't grant it as is. You may REALLY be angry at "THE SYSTEM" then, but you'll be stuck.
If you think "THE SYSTEM" is a big scam, think again. The reason for all this is that the law takes parental rights VERY seriously. (Even if the father himself arguably has not.) It takes a court order to alter parental rights to a child --- both terminating existing parental rights and granting new adoptive parental rights. The adoption horror stories that appear on TV mostly arise from people trying to terminate someone's parental rights without giving them enough notice, and courts making the mistake of going along with that. Then the "missing" parent shows up and demands a hearing --- the hearing that was not given before. It's a nightmare for everyone involved, but ESPECIALLY for the child. ESPECIALLY the child.
Or maybe you just fear the legal fees will be high --- and they are NOT minimal. Doing what you are trying to do is a bigger deal than it may seem.
I have been a lawyer since 1983. When I started doing just adoption in 2003, I had hopes of just advising people who wanted pretty much to do their own adoptions. If adoptions occurred frequently, maybe that would make sense. But they do not. And advising someone how to do such a deceptively complicated matter would take me longer than doing it myself. Also, if I give advice, and something goes wrong, guess whose malpractice insurance is going to be called on. Mine.
YOU cannot get insurance against doing something wrong. If something fouls up on you, you'll be stuck with the consequences. If you hire a lawyer, there will (most likely) be insurance to protect you from goofs. Mine would. Probably couldn't "fix" what's gone wrong, but at least it would compensate you.
I have answered many questions here, for free (and I mean in the hundreds). But your case is too complicated to direct you from this distance --- I see at least 3 things wrong that don't even have to do with your question. And if you DO allow a lawyer close enough to render real help, ... we cannot work for free (as opposed to just answering a question here or there for free). (And you should find a lawyer with adoption experience, not just any lawyer. Because it IS deceptively complex.)
You have a perfect right, BTW, to do it on your own without an attorney. You also have the right to put a new transmission in your car by yourself. If you have the time and tools necessary to do either, have at it. It could save you a bundle. (And with enough time and perseverance, you just might "get away with it." Fine.) Otherwise, neither is advisable, and it is too risky for a lawyer just to sing out a few tips from the sidelines. I cannot even begin to answer your question without telling you that you're probably taking a bigger risk than you think, and that it is probably a risk you shouldn't be taking at all.
I know that doesn't "answer" your question. Sorry. But advice is: Hire a lawyer. Your grandson deserves that. (And if you think THIS is too expensive, wait till he wants to drive!)