Thanks for posting your query.
Height is mostly genetically defined and it is inherited from parents. Environmental and personal factors also contribute in defining your height. As your parents are also as taller as you are then it is quite difficult to get more height. Usually growth plates are closed between age of 16 to 21. You should take proper diet,exercise,performing yoga
may help to increase some height but success is not guaranteed as you have familial dwarfism
treatment like baryta carbonica 30 containg nutritional and vitamin supplements may help to balance your diet but whether it will effect your height is questionable. You may like to talk to your doctor.
Hope it helps.