Advice. Just brought home a 6 month old (make) ragdoll and introduced to my 10 month old ragdoll (female)

Hi there, let me start by saying both cats are spayed and neutered.

Brought home the new kitty a few hours ago. I’ve kept both cats separate. I’ve been with my 10 month old to give the new kitty some space and time. She had been hiding in the bedroom, she has calmed down and wants to go outside now.

The new kitty is still hiding in the living room under the tv cabinet.

I live in a small apartment so cannot section off the apartment for them both to do their own thing.

It has been a couple of hours now. Should I try and introduce them to each other? What is the next step to take?

Thank you!!