I looked into neurofeedback for DS 7 (severe ADHD) a year or so ago and didn't find any real proof that it is beneficial, so we never tried it.
We started stimulant meds about a year ago and it has made a huge difference. We started at 2.5mg (lol) and kept going up until we saw the level of improvement we were looking for. A few months later he started school and it quickly became apparent that the dose we were using a home was not adequate at controlling behaviors at school and we adjusted accordingly. He still takes the lower dose at home and it makes a huge difference, but it's not enough to control disruptive impulsiveness at school.
We had a hard time getting the docs to agree to the higher dose at school due to DS's age, but he definitely needed it. The school reported immediately that behavior was greatly improved and DS did not seem overmedicated at all, that he simply seemed more himself. We feel the same way. I went against medical advice when I gave DS the extra 5mg to try (at home the first time, not at school in case it didn't go well), but I'm so glad I did because it saved his school year. Some kids just need a higher dose than doctors are used to giving for their age.
Also, if the meds seem to work better some days than others, in our experience that happens when DS is just barely at an effective dose. Maybe he ate more breakfast or absorbed the med a little differently for some reason or was just having an extra rough day, but since starting the higher dose at school the ADHD symptoms are well under control without the variability we were seeing at the lower dose. I would say that if you are using a med that is actually working, but not working well enough, that you talk to the Doc about trying a higher dose.
