All prescribing is done by doctors, so you have to talk to your doctor or psychiatrist.
That sounds really difficult to manage. I think the issue that some doctors have with prescribing the higher end of ADD medications (the stimulant type) is that at those higher doses, a good amount of side effects can occur. The benefit of the taking the medication then diminishes. Do you see a psychiatrist? Without insurance, I am sure that is difficult. A clinic setting my be available to you. But that is probably your best bet to be seen by a psychiatrist that you've either worked with in the past or a new one. On the whole, they want you to be well managed.
There are two types of drugs, amphetamine and methylphenidate. Have you tried a medication in both of these classes? One may work better for you than the other. Also, vitamin C and citric acid can interfere with absorption so should be avoided. I also have read that sometimes the effect people are seeking doesn't match what the drug is actually supposed to do. You should have just normal functioning and not an amped up feeling that people might expect or want. How do you feel on the dose you they have prescribed for you thus far and what medication exactly have you tried?
Here's an article that might help you. https://www.additudemag.com/adhd-medication-11-steps-for-prescribing-it-effectively/