I usually use 2 pots when "feeding". One with hot water for brewing, and the other for brewing tea. These "One stone, Two birds" style can speed up the patina action. Specially for large pot.
I just cannot use such large pot without guests. They get store in their little place and look pretty sad.
This is the largest pot I have in the above picture. Pouring the rinse or left over tea over the pot filled with hot water, is the best way to feed/use them. With the steam evaporating from it when feeding, this method can add mood, aroma to the tea space and keep track of brewing time when watching the surface absorb the liquor. Of course if you know them well.
Make sure you polish them after usage with a soft cloth, and while they are still hot.