It is okay to be completely honest with God. My lack of faith does not reduce him in anyway whatsoever. Faking faith will not get me anywhere - God sees my heart. And he's got me in his hand.

"
Can I be honest
I just wanna know
That You still got this
When all I’m holding onto is a promise
God You promised
That You’ll never leave me
When I’m scared of the dark
You’re right there with me
Your kindness never fails
It’s always reaching after me
But right now God all I need

Is to be honest"

~ Leanna Crawford, "Honest"