How long each day does a 12 year-old have to study the quran???
Now I normally ignore every non Jewish or obvious trolling but I will answer this one. From my understanding of Islam I recall there is no limit set but studying it daily such as for an hour or two will allow you to remember the Qu’ran in pretty much no time at all.
Just keeping studying it and you will finally remember it.
Kyle ben Avraham Avinu (קייל בן אברהם אבינו) (2013) How long to under the Qu’ran. [online] Ask a Jew. Available at: https://askajew.co.uk/question/how-long-to-under-the-quran/ [Accessed 24 May 2022]