How can one overcome the feeling of forgetfulness and the increasing fear of not reviewing what has been memorized from the Holy Quran, while continuing with daily memorization and review?

We commend you and strengthen your resolve, and we ask Allah to help us and you in memorizing His Book and acting upon it. You should praise Allah who enabled you to memorize His Book, for this is a great blessing. We advise you, after fearing Allah and having sincere intentions, to recite what you have memorized and repeat it so that it becomes firm. Then, review it from time to time at close intervals, and with a shaykh or female students. By doing so, you will not forget. And if you forget, it will be easy for you to recall what you have forgotten. It is necessary to double the effort and increase the time as your memorization increases. Seek Allah's help and make abundant supplications.