Honestly, I cannot recall too much the first Ramadan but I know that the “no food or drink” part took a little while to get used to. At the same time, my brother and I were so hyped about being Muslim that we helped each other get through it.
As time went on the struggles of food/drink became easier as others became more apparent – i.e. not getting angry, doing more good, being more patient, etc. This was also because at first, when learning about Ramadan, the food and drink part is the first thing we were taught/learned.