Cannot get to fit all the clues, but I find this to be an interesting answer:

>! Coffee

My infix has been removed.
>! off

My suffix is this.

>! I am lost here

If you can read this, you're on my prefix.

>! If you can see (C) this

If you read this in the morning, you might guess me sooner - what am I?

>! The morning coffee :)

The title

>! The coffee sure may be warm but not sure about riley.