I am currently taking Adderall (dextroamphetamine and racemic amphetamine) 30mg twice a day, I started 10 months ago with 10mg and my dr has increased, but now I am immune to 30mg, what do I do?

ADHD. Attention deficit disorder and hyperactivity is a delicate condition. Medication is useful but other variables are often ignored. Proper sleep, avoiding caffeine and refined sugars as well as keeping a structured environment helps as well. Check any other meds you take that may cross react. Discuss these with your doctor.
See your doctor. Only your doctor 'knows' your case well enough to make any recommendations as far as stimulant therapy.