You could start by having an honest and calm conversation with your parents about how you’re feeling. Let them know that while you respect and appreciate the effort they’ve put into supporting your Hifz journey, you’re struggling with the stress and difficulty of memorization. You might say something like, Help with the Hifz has been really valuable, and I’ve learned a lot, but I’m finding it overwhelming, and I don’t think I can continue in a way that’s healthy for me.” Be sincere about your challenges, like forgetting what you’ve memorized and the pressure it puts on you.
It might help to reassure them that you still love and want to stay connected to the Quran, just in a way that suits you better—maybe through reviewing what you’ve already memorized, focusing on understanding the meanings, or improving your recitation. Parents usually want what’s best for you, so if they see that this is causing more stress than benefit, they may be more understanding than you expect.