I find if as I come back through 140kts I punch the gear down to help bring the aircraft back to a safe speed to drop some flap. Obviously different for different planes and I dont do circuits where I imagine you would only be loitering around down slow but it works for me.
Try flying a surveyor where you have to remember to put te circuit breaker as well tho!! Basically it all comes down to making you have a rhythm that you get into where you are doing everything in the exactly the same order and at exactly the same stage of flight every time. They begin to teach that when you learn at the aeroclub with cockpit drills, you just need to fine tune them to your aircraft and the type of flying u are doing.