It sounds like you are on the right track. You've realized the importance of diet and lifestyle way earlier in life than most of us did. For now, you should just do the best you can, and don't stress about not being able to do it perfectly. Yeah, there are some perfectionists on this site who might criticize your daily diet. But it's better than the diet of 99.5% of other people. As you get older, and especially once you get out on your own, you can improve it more. For now, keep up the good work and don't be overly concerned if it's not precisely what the PB says it should be.
Be thankful to your parents that they are generally very supportive. Not everyone has that luxury. You are very fortunate.
Live your life and love your life. It's the only one you get.