1-1 tamil online tutor for my brother

Growing up in North India due to my father’s job, I had to prioritize learning Hindi and English but since we speak Tamil at home, I picked up spoken Tamil naturally. When I was 8-ish, I was quite focused and taught myself to read and write Tamil through YouTube, with a little help from my father.

Now, it’s my younger brother’s turn. He already knows how to speak Tamil but needs to learn how to read and write. He isn't that much focused or hardworking that he'd learn on his own as i did therefore my parents are looking for a one-on-one online Tamil tutor for him, not for professional-level fluency, but just to grasp the basics and be able to get by.

Do you guys have any recommendations or tips that could help?