Duncan
Not much I can add, but don’t wait to start taking on fuel. You may be feeling good for the first hour or so, but don’t forget to eat and drink BEFORE you drain you energy.
From experience, don’t change the energy products on the day or have to many gels without food. Practice now and stick to a product that works for you
As to eating beforehand, I usually have rice or pasta the night before, and porridge for breakfast
