Im afraid I'm inclined to side with the others who have commented.
Im going to assume this is from ADHD,
60mg of Adderall is a substantial dose(as I'm sure you're aware), however there are non stimulant medications that can be as effective, though I'm assuming you were prescribed those before ever getting to Adderall(most physicians won't prescribe amphetamines before exhausting other options).
Other than non stimulant meds there isn't really anything "stronger", you could try Ritalin(methylphenidate) but I'm not sure that it wouldn't be cross tolerant.
As far as dextroamphetamine I know that this is cross tolerant and id have to disagree with lookyboop as i find the adderall formulation considerably stronger than dextroamp.
So all things considered, if it isn't really difficult for you i think you should try to take a month break(or however long) from Adderall, then try taking a slightly lower dose 30mg or so and build up again from there
Good luck with everything!
-p