Guidance from The Prophet (saws)
Anas ibn Malik (r.a.) reported: The Messenger of Allah (saws) said, "Eat Suhur (predawn meal). Surely, there is a blessing in Suhur.''
Related by Bukhari and Muslim.
To consume the ‘suhur’ (pre-dawn meal), even if it is only a small amount of food and/or drink, when one intends to observe a fast the next day is from amongst the extremely preferred Sunnah of the Messenger of Allah (saws).
If one makes it a habit to skip or forego the ‘suhur’ or pre-dawn meal when observing fasts, although that by itself would not effect the validity of the fasts, the skipping of the ‘suhur’ would be against the guidance and the Sunnah of the Messenger of Allah (saws).