Azelf, Mesprit and Uxie

Hey guys today I am on a new mission! to catch Uxie, Mesprit and Azelf. They are really hard to catch and I've had to turn the power off about three times just to get near to catching Uxie. Mesprit is extremely hard because when you walk up to him he will fly away then professor Rowan tells you that he moves a lot and you have to use the map application on the Poketch. So now I am tracking Mesprit which is hard so wish me luck. Good luck to anyone who is in the same situation as me!!!