How to approach the doctor about my ADD/ ADHD treatment?

I have had adhd when I was 2 1/2 Treated with Ritalin/Adderall till I wasl 3 My mom noticed I was to calm So I stoped taking it by 3 Through out elementary I noticed I was not as active as others It seemed I needed to put more effort in things like completing tasks Then the other kids who made every little task seem so basic to them It wasnt till I started middle school when things got bad In 6th grade I barely passed the year with C’s and D’s 7th grade with LOW D’s I’m in 8th grade and things seem so difficult for me Lately I found myself losing focus in class, I make a lot of careless mistakes In schoolwork, chores, or well in other activities. I find it excessive and dont know how to avoid that I seem to lose things I need to complete tasks like pens or pencils Or when I have my socks and need to find my shoes I tend to lose my socks by the time I find my shoes I find it more and more difficult to do tasks that require very little efforts When I try to read I book I would read everything throughly but forget everything detail/important part of the story When someone is talking to me I tend to not notice they are saying something to me Until they tap my shoulder or I look and see them looking at me I recently told my mom about this and at first she didnt believe me Then She took me to a doctor who was conservative at diagnosing people and Prescribing medications I spoke with him for a while Then he says I have Adhd Imperative I didnt know what that meant but he prescribed Me 10 mgs of Focalin Xr to start of with Then 20 mgs He said that it was just for school Or when I need to complete school work over the weekends I have been taking it for a month And my problems Have seriously gotten worse I feel so much more un alert when I’m on it And it makes everything so much more of a blur What I had told him to begin with was that I would often Forget things needed for tasks But now I find it affecting me so much More out of school And I dont know what to do I spoke with my mom a couple of days ago and haven’t taken it in about 5 days She says maybe the dr needs to change the medication and scheduled And appointment for sometime this week She seemed very doubtful about it though And it took quite a while for her to even consider scheduling a appointment I dont know what to tell my doctor or even what to do? I’ve heard storys that Amphetamines work better dealing with this But I dont know how to bring this up with my doctor I dont know what to tell him I dont think that by any means I have adhd But more like add How can I approach my doctor about this the correct way With out him being so doubtful as my mom may make him about me?