Honey, please.
Contact your local courthouse and research where you might be able to participate in a free, local workshop on filling out the paperwork.
Then make yourself a cup of tea, wait til the kids are in bed, fill it all out in one go, and send it in.
I know in my state, there are at least 3 advocacy groups that host monthly free workshops on plaintiff's rights and paperwork 101 for divorce cases. They are there to help. They do not and will not judge you. Your info is kept confidential.
It may take time to finalize the divorce, just like it's going to take time for yourself and the kids to adjust.
Ask yourself this: Is your life any better, easier, more fulfilled, satisfying with him around?
If the answer is just...no, then...why continue?
I miss my husband.
But I miss a person that he chooses not to even TRY to be.
At least with the divorce final (whenever that is) I know that since I do not have to see it, hear it or deal with it (his addiction), I can work on salvaging some sort of relationship for him with my son.
Our relationship, such as it was, is over.
It was never what I thought it was, anyway.