I have a family share plan with three phones. One of the phones was used by my father-in-law, but is no longer used and I would like to remove it. The problem is, that with cross upgrades it is the only phone left on the account that is not month to month. The other two phones are iphones and they are both month to month. My question is can I get the remaining commitment on my father-in-law's old phone moved to one of my other phones so that I can remove that phone from my account?