How do you mind make up baby's bottles?

Heidi.jowett • 24 years young pregnant with my first I'm pommie (English) been in Australia 6 years :)
I'm wanting to look at better ways of doing this 
Can I pre make bottles with formula added once the water has cooled down in the kettle and put them in the fridge then heat them in boiling water in a jug? If so for how long can pre made bottles be in the fridge for??
Usually I just get a bottle out the fridge heat it up in the microwave then add the formula but night time feeds I want to know if there are easier and quicker ways