Will a son be questioned on the Day of Judgment about his parents' shortcomings in adhering to proper Islamic attire, given his inability to change the wrongdoing except by heart or sometimes by tongue? And what is the guidance in this situation?

If you have commanded your mother and sisters to observe the legal hijab and forbidden them from displaying their adornments, then you have fulfilled your duty, because whoever is unable to change an evil with their hand is only obliged to condemn it with their tongue, according to the saying of the Prophet, peace and blessings be upon him: "Whoever among you sees an evil, let him change it with his hand; if he is unable, then with his tongue; if he is unable, then with his heart—and that is the weakest of faith." You must continue to advise them gently and compassionately, while supplicating for their guidance.