Is it permissible to postpone advising family members regarding adherence to the শরعي (Shari'i) hijab and other reprehensible acts until after the examination period, while gradually offering advice by first explaining the effects of sins and transgressions?

The brother should strive to advise his family, seeking Allah's help and supplicating for their guidance. There is no harm in advising them gradually. The priority should be to strengthen faith, purify hearts, perfect prayer, and remind them of the Hereafter, Paradise, and Hellfire, encouraging them to remember Allah. In the early days of Islam, surahs were revealed mentioning Paradise and Hellfire, and only later were the lawful and unlawful revealed. Prayer prevents indecency and evil, and the remembrance of Allah is a fortress against Satan. There is no harm in delaying the matter until after the exam.