Usually providers will start at a low dose initially to minimize side effects and monitor for response. Depending on the provider, dose increases vary in terms of how quickly they do them and in what increments. If you’re thinking that your son might benefit from a higher dose, speak with the provider about those concerns. It may be helpful to go in prepared with notes. Has the current dose been effective in any way? What have you noticed that changed with the medication? What issues are you still noticing that seem to be a challenge? Do the symptoms seem different after the medication is given? When does the medication appear to wear off?
There’s no hard and fast science as to how to do the dosing. Working closely with your prescribing provider is the most important thing. They will be careful not to be too aggressive usually because they don’t want to cause severe side effects. I’d suggest listening to some of the webinar podcasts by Dr. William Dodson for more detail. He offers great information and education on medication management.