Lately for me I have been working on the driver. My iron play is good, but the driver is where i struggle.

The Driver is also the club that I am inconsistent, my irons saves my game.

does your range have targets or yardage signs? If so, I'd shoot the distances with a rangefinder and use that to get comfortable with specific distances. I'd also suggest using alignment sticks to make sure that your body is properly aligned with your target. Finally, I'd NOT get the large bucket of balls. You don't want to get tired and develop bad habits. Rather, hit the small or medium bucket with a specific purpose.

does your range have a short game area? if so, spend quality time there honing in chipping, pitching, sand, etc. If possible, use your regular balls rather than range balls to gauge how the ball reacts

Practice with a purpose and not just hitting balls. Even after taking a lesson and want to ingrain things.

I like to envision some of my favorite holes on the courses I frequently play. Then I hit range shots as if I were on the hole. Driver, 7-iron, wedge...I find that it gives me a little bit more purpose to my practice.

practice your free throw shots: wedges, chipping, and 3 foot putt

A big part of improving is knowing what your weaknesses are and working on those things. A professional golf coach can help you identify those things and give you some drills you can work on during your range sessions.