Difficulties following directions and focusing

So I know my daughter has a lot of energy, and she's a pretty great kid. However, we just signed her up for gymnastics and noticed she does not follow directions very well. She's very easily distracted and can not sit still while waiting her turn. I'm pretty sure she is nerospicy, but I don't want to pursue a diagnosis with everything that's happening. I just feel like I'm struggling to find a way to help her in her class without having to chase her around and repeat the directions to her over and over. Any advice on what could help? For reference, we do limit foods and drinks with dyes. I know those play a role in behavior.