dbmcubs21

I recently took a lesson for the first time and was told to work on my back elbow going up instead of back which causes me to get stuck at some points. Swinging the new way feels like trying to ride a bike for the first time and i have no idea where the ball is going. Does anyone have a suggestion on how to implement this swing change without totally blowing up my scores, or if I can change it on the range while keeping my natural swing on the course until I feel I am ready?