Ritalin Day 5 - is it working?

took the ill at 9 - did not feel it kick in at all

Went to a full day course - almost fell asleep at the fist row! after just 20 minutes
Kept drifting off to other places very often, probably as often as I usually do.

Hypothesis - I might have felt the 40 MG LA because I was weakened by the flu. Neurologist mentioned that this dose might be too small for me


Didn't feel is wear of at all.
Just a regular day