Is there any possible way to get 5mg of Celexa?

I was just started on 10mg and I am scared to death to start due to the increase of anxiety for people with panic disorder. I was on this a few years ago and could have sworn that I was prescribed 10mg but that they were perforated so you could split them to 5s. Was this a generic? The pills I have are super tiny and no perforation, doctor says it's the lowest they can go.

Thanks!