How can one advise a wasteful wife who burdens her husband with demands and does not respond to advice?

The advisor must repeat the advice and not despair, and continue with it even if there is no response from the first time, while prioritizing the advice and starting with the most important, such as instilling the fear of Allah and His punishment, and clarifying the husband's rights that Allah has entrusted her with, as this may lead to a better response.