I've read that 20 minutes should be the feeding time. But my strays are more starved for attention than food, so my minimum stay is 1 hour.
The Royal von Meouw Dynasty: His Royal Highness the late Prince von Meouw,
Her Royal Highness Princess Gatita von Meouw, Nikita Duchess of Meouw and
His Highness Cuchi-Cuchi, next in line for the throne of Prince von Meouw.