How soon is too soon to suggest getting a new dog?

My mom just called me and said that the family dog is knocking on death’s door and will probably be put down sometime this week. While I am devastated, I know my parents will take this harder since I no longer live at home and the dog is their baby. Would it be inconsiderate for me to suggest looking for a puppy or adopting another dog? Should I wait a certain amount of time to suggest this? I know my dad has wanted a new puppy for about a year, but will his desire change with the passing of the current beloved dog? Thanks much