if you see that your friend does not care about your words when they come to him then cut him off and change his meaning to something other than what you intended and postpone it until he is active and free.
وإن رأيت صاحبك لا يكترث لكلامك إذا ورد عليه فاقطعه وأحل معناه إلى غير ما أردته وأخره إلى وقت نشاطه وفراغ باله