Focus on plays. Reading a script by stalwarts like G. Sankara Pillai, Thoppil Bhasi, or C. N. Sreekandan Nair is a unique experience. The text is mostly dialogue, which is great for understanding spoken rhythms and how people actually talk.
You can even try reading parts aloud. Stage directions provide clear context for the action. Plays are meant to be performed, so the language is active and immediate. It's a dynamic, different way to engage with Malayalam writing that bypasses the dense descriptive paragraphs that can sometimes slow down a new novel reader.