please help lmao

my periods are super heavy, and super long as well (about 8-9 days). i have to change my pad every 4-6 hours and i have to wear more than one maxi pad at a time. is this because of my iron deficiency? is there anyway i can shorten my periods overtime, or find a more comfortable way to deal with them? keep in mind that i am only 13, so tampons are a no go at the moment. im too uncomfortable to talk to anyone i know personally about this so eve was my second option