Hello, I have a young monstera deliciosa. It has developed small brown spots with a yellow halo that eventually becomes bigger. Does anyone know what could be the issue here?

I live in Singapore where it's warm and humid. I water it once every few days when the top inch of the soil feels dry. I do think it drains well as the stick is dry when I poke it in to test. I mist it everyday.

Would love to get this healthy again. Thank you.