Is It Normal To Feel Sleepy And Clumsy While Taking Diazepam For Anxiety, And How Long Until Prozac Takes Effect?

I have been on diazapam approximately for 10 days for anxiety. Took 10mg twice a day for 2 days then 5 mg twice a day (morning and night) for 3 days now I just took 2.5 at 5 pm . Been feeling sleepy and clumsy all this time. I’m waiting for Prozac to kick in. I’m up to 40mg.