Ibn Haajar said:
الذي يداوم على تلاوة القرآن يذل له لسانه، ويسهل عليه
قراءته، فإذا هجره ثقلت عليه القراءة وشقت عليه .
The one who constantly reads the Qur’ān gets his tongue used to it and so reading becomes easy for him, but when he abandons it reading it becomes very heavy for him and difficult
(فتح الباري (٧٩/٩)