The souls of the righteous are in the hand of God, and no torment shall touch them. They seemed, in the view of the foolish, to be dead; and their passing away was thought an affliction and their going forth from us, utter destruction. But they are in peace. For if to others, indeed, they seem punished, yet is their hope full of immortality; Chastised a little, they shall be greatly blessed, because God tried them and found them worthy of himself. Wis 3:1-5
It is never too soon to pray for the souls in purgatory.
Eternal rest grant unto them, O Lord; And let perpetual light shine upon them. May they rest in peace. Amen