Im losing my azir skills

I used to be good at azir (this is all in s6 btw), but about a month ago i started playing other mages. After a few days of playing other mages, i played azir again. But from then on I played him terribly. I mean, I can drift, but whenever I try to shuffle, I screw up in a lot of ways. Be it accuracy, timing, underestimating the enemy, enemy picking, you name it. How do I get good at him again?? i love playing him, despite his win rate, if played well, he's a god.