dosage increase with daytrana? | ADHD Information

when do you know when it's time to try a higher dosage? my ds has been
on 15 mg patch Daytrana for almost 1 1/2 years now. it has been great.
recently, however, it seems as if it is taking longer to "kick in" and it doesn't
calm him down as much. we are currently out of town due to an unexpected
death in the family. we have been away from home for a week and sleep
hasn't been great. I think this is what is throwing him off, but I am not sure.
He recently gained a few pounds (3-4) which he hadn't been doing for a
while. what do you all think?