Extending life of prepaid account via balance
I'm currently an international student, and would be going home for 3 months right about now. However, I'd like to keep using my old phone number after I come back. From what I have read, the account goes into cancellation phase for 60 days after you stop paying, but adding balances can add amounts of time to the account life. However, am I correct in assuming that if I let the account go into cancellation for, say, 40 days, then top up $10 dollars which has a 30 day expiration time, that I will be able to keep the account alive for 70 days total? Or does topping up during cancellation not extend the life of an account.
Any insight would be greatly appreciated.