You can join JROTC.
18 years old is the minimum age required to join the Navy ROTC.
Yes, it is still possible to join the ROTC. Before doing so, you need to think about your child and who will be caring for them.
Yes.
College ROTC commissions Reserve, National Guard, and Active Duty officers. You may choose which one you want.
Yes
Yes, but you'll need a doctor's letter.
no you will always (out of rotc) start in any branch as a 2nd lieutenant
Yes it either moticates them to join the military, go to college and join the rotc, or just graduate.
You'll need a haircut when you first join.
Jr. ROTC is not a requirement for joining any military branch. It can be a benefit to you both personally and professionally (although I would avoid sharing this information in Boot Camp if you do join).
Yes just because you have a child this does not disqualify you