Absolutely not. Too late. That decision must be made on earth before death. No Purgatory, either, and no provision for praying for the souls of the already deceased.
There is no point in praying for the dead? I don’t think there is.
There’s no need for faith if you were to die and be greeted by Jesus offering you a choice.
“You didn’t believe when you were alive. Do you believe now?”
“Well, of course!”
“Do you want to go to Heaven or Hell?”
“Heaven sounds good!”