Is it normal to talk to the small voice in your head?

That's fairly normal. I often have debates with a devils advocate in my head when deciding something.

You are not telepathic it's all in your head.

I talk to myself with my subconscious in mind

I may be wrong, but fundamentally when people talk about their conscience they're referencing their subconscious, a section of the mind that observes all and is outside the conscious realm

Basically everything you observe gets filtered through the subconscious, and only what you find subjectively important is what you're consciously aware of, more or less

What makes the subconscious so amazing is that it's like this part of yourself that can never lie to you, as long as you don't have any defense mechanisms in place

I have found through meditation you can learn to listen/sense/feel your subconscious in ways it naturally communicates, so like the subconscious language and conscious awareness are really in tune with each other

You can learn a lot about yourself and how you interact with your environment and learning how to able to approach things successfully

I say study a little psychology so you have a framework for what's going on mentally as you're in the moment or reflecting on what happened. Also do some serious, silent meditation so you get undeterred opportunities to let your subconscious speak and your conscious to listen. Both of these things will greatly augment what you're currently doing

Does it talk back?

It's not uncommon.

I have conversations with myself out loud when I’m on my own but I don’t name the voices

Did you know some people dont have inner voices?

I do I just thought that factoid was relevant.

Why would I hold a conversation with the representation of myself? I cant argue with myself. Cause we all belive the same thing. I use "we" in this context to refer to myself and the various thought processes, though I am one entity floating in a brain surrounded by bone with a fleshy outside.