How to maintain my growth spurt during puberty and grow taller?

Not specifically. In puberty, the growth centers determine potential for more growth and simple measures help the best.Follow a healthy diet, rest and exercise.Special diets or exercises will not make anyone grow taller than their genetic potential.If you want to know how much longer you have to grow, an x-ray of the wrist and hand can be analysed for bone maturity/growth potential.
Genetic Determinatio. Good nutrition, proper exercise and generally good health will help maintain growth. But ultimately, your pubertal growth is already predetermined genetically.You can not make it be different.