Make it a habit every single day to think in Malay, speak in Malay, write in Malay, watch or hear something in Malay.
Recommendation - watch a Malay short film on Youtube with English and Malay subtitle. For example: 'Filem Pendek Raya Little Joe 2023 at this link https://youtu.be/9sk8PNUwe5M?feature=...
Semoga berjaya! ( All the best!)