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

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.