What age should I start washing my LO’s hair daily?

Hi, my son gets a bath every night; however I only wash his hair ever other day. A few weeks after he was born, he started getting daily baths/hair washes. But, I noticed he would have dandruff. Ped said to do every other day, but I'm wondering when that should stop. He's 14 months old now.

Update: I didn't expect so many comments, thank you everyone! I had no idea it wasn't necessary daily 🤦‍♀️. My son has blonde hair, it's starting to get a bit curly in the back where it has grown out more.