just wanted to ask if anyone has found it better to take prozac in the morning or at night?

i normally take it at bedtime but the psychiatrist said it could be taken either in the morning or at night so not sure whether to try changing - just want to feel better for more of the day - at present i feel drug has lessened by 2.30 so i find afternoon/evenings quite difficult. i have other meds i can take at these times though