Initially I was having two cups of coffee to make it till noon but now I only have one cup. First couple of weeks were definitely more difficult to concentrate

Initially I was having two cups of coffee to make it till noon but now I only have one cup. First couple of weeks were definitely more difficult to concentrate but got easier and now I rarely notice. But I do the easiest pattern with an 8 hr eating window and if I am hungry I will eat at 11am and stop an hour earlier than normal so 11am-7pm