While learning to recite the Holy Qur’an, we sometimes practice reading a surah that contains a mandatory…

While learning to recite the Holy Qur’an, we sometimes practice reading a surah that contains a mandatory prostration (sajdah). Occasionally, we repeat the verse with the sajdah multiple times for practice. 1:Is it permissible to delay the prostration until the lesson ends and then perform it as a missed obligation (qada) for the number of times we recited the verse, or must it be performed immediately? 2: Is it permissible to mark or underline Quranic words with a pen to make it easier to review my mistakes in pronunciation, or would this be considered disrespectful?