Hello everyone! My son has been waking up in the middle of the night for a…

Hello everyone! My son has been waking up in the middle of the night for a week and asking to drink, so it's just going in circles. Although he eats before bed. I don't understand what to do at all. We recently saw a neurologist, the problem was frequent nighttime tantrums, they prescribed magnesium. The tantrums stopped, but there is crying at night and he demands food.