We are not supposed to give medical advice, but all I would say is be careful not to take the sub too early. You don't want to make the withdrawals any worse than they have to be. Doctors usually induce based on your symptoms and not necessarily how long it has been since your last dose. If you don't feel like you need it then don't take it.
Maybe post over on the Sub/Methadone forum. You might get more responses over there. Good luck!