You will have a very hard time getting a termination done without an attorney. As parental rights have constitutional protection, it is not an easy process. So many unrepresented people were screwing the process up that the self-help center no longer provides forms. You may be surprised at the cost of using an attorney, especially considering that your "ex" may contest but really doesn't have much of a leg to stand on so it is really more uncontested. Once you get the termination out of the way, the adoption is pretty easy. Please call my office if you would like a consultation. The only other option would be to see if you qualify for a reduced fee or pro bono attorney through Washoe Legal Services or Nevada Legal Services.
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I agree; your chances of getting this done without an attorney are slim.
I don't do this anymore (one of my partners does, but I"m not at the office). If memory serves, though, the general standard is two years of no contact or support, or consent with new stepparent adopting.