I see two motivations for the coaches wanting you to switch to the other side. One, they will ask you to drag bunt more, and practicing switch hitting will make you more comfortable in the box to bunt. Second, they will ask you to try and hit the ball on the ground to the left side of the IF. This will allow your speed (and I am assuming you are a sub 7.0 runner) to control the game a little better. I agree with coaches above, don't split the time down the middle. Double your work and reps, and most of all, good luck!