Last month I was diagnosed with adhd/add I had signs of it all my life but with my new job I decided to get treaded finally last month and was prescribed adderall Xr 20 for my first script it works great but doesn't last all day like I need it to I work about 15 hrs a day and the adderall only last around 8hrs I read about some people taking a xr dose in the morning then a Ir later in the day when they start to feel the crash would this be the best option? Or will a higher does of Xr like xr 30 do the trick ??? And how do I go about telling the dr this ???