What's the easiest way to prep a bottle quickly, especially for night feeds?

This is what I do because I don't want my son to cry for too long otherwise he's wide awake. I put warm water in a flask & prepare 3 sets of milk powder (3 scoops each) and 3 clean bottles and place it next to my bed on my side table. Takes me less than 3 minutes to make his milk and I get to dreamfeed him which means I get my sleep back heehe