have/get something down to a science

get (something) down to a science

To learn, master, or understand something perfectly, to the point of requiring little or no focus to do, recall, or accomplish it. I got my routine down to a science so there wouldn't be any room for error during the performance. I'm a working mom of three, so I've got lunch-making down to a science—I put out all the pieces of bread, add jelly to each one, and then do the same with peanut butter.
See also: down, get, science

have (something) down to a science

To learn, master, or understand something perfectly, to the point of requiring little or no focus to do, recall, or accomplish it. I had my routine down to a science so there wouldn't be any room for error during the performance. I'm a working mom of three, so I have lunch-making down to a science—I put out all the pieces of bread, add jelly to each one, and then do the same with peanut butter.
See also: down, have, science
Farlex Dictionary of Idioms.

have/get something down to a ˈscience

(especially American English, often humorous) have a very precise and efficient way of doing something, especially something that is normally done in a casual or informal way: When Tom says he has shopping down to a science, he isn’t kidding.
See also: down, get, have, science, something
Farlex Partner Idioms Dictionary
See also:
  • down cold
  • down pat
  • down to a fine art
  • have (something) down cold
  • group
  • a committee is a group of men who keep minutes and waste hours
  • be able to (do something) in (one's) sleep
  • be able to do something in your sleep
  • do (something) blindfolded
  • do blindfolded