Here is a little advice on the importance of having a daily quiet time:
This day’s meal, though large and liberal, strengthens thee not for tomorrow ; the body languisheth if there be not a daily supply of repast. Thus feed thy soul by meditation. Set thine hours and keep them, and yield not to an easy distraction.
Here is a good word on the whole “I am a morning person. I am a night person,” preference that goes around.
The important thing is that you discipline yourself to read, meditate and pray daily. Morning, noon or night is not the issue.
It is not a matter of when in the day but it is a matter of every single day:
One time cannot be prescribed to all: for neither is God bound to hours, neither doth the contrary disposition of men agree in one choice of opportunities. The golden hours of the morning some find fittest for meditation ; when the body, newly raised, is well calmed with his late rest ; and the soul hath not as yet had from these outward things any motives of alienation. Others find it best to learn wisdom of their reins in the night ; hoping, with Job, that their bed will bring them comfort in their meditation; when, both all other things are still, and themselves, wearied with these earthly cares, do, out of a contempt of them, grow into greater liking and love of heavenly things.
Both of these are from Joseph Hall who wrote such advice to his congregation in the late 1600s.