Ulysses, I have to finish filling in the form 35.1 Affidavit. Obviously I can't answer 12: My plan for the care and

If  you're looking for an order for joint custody or joint decision making authority, then yes.  If the existing order or contract says it's joint, and you don't want to change it, then check "joint".  If you have sole custody or sole decision making authority already, then I suspect you don't want to actively seek an order making it joint.

For the Plan for Upbringing, you essentially list what school and doctor the children have.  Then say that contact with the other parent is as ordered or agreed upon, taking into account the age appropriate views and preferences of the child.  Vague is your friend.

That's not unreasonable.

How old is that child?

You can ask for an order that the father not interfere in any relationship with that child, and ask for an order that you may have contact and access with that child at the child's sole discretion, and an order that the father encourage the child to engage with you for joint counselling or supervised access or communication.  However, the court isn't going to order a  sixteen year old to have access with a parent if the child literally refuses it.  Still, you can make some hay by raising these issues and your evidence will make father look bad.  This is something to discuss with your lawyer.

I'm going to mark this question thread as complete Lisa, although I'm here to discuss your draft 35.1 with you further, of course.  I'm on and off for the rest of the afternoon, I have to get a pile of baking done for a function.