The mind and body become accustomed to the effects of the drugs you take regularly over time. It’s not really that you aren’t getting any effects, but when being on the amphetamines has become your base line it’s normalized and this your not gonna feel the jag you do the first couple days going from no amps to amps. Now you’re going amps to amps, know what I mean?
If you don’t want to become an addict the best step would be to just take your pills as prescribed and be done with it. You’re chasing something here, and it’s definitely a step to potentially foray into addiction at this point. Trust me, you can’t catch the day 1 and 2 highs by taking more. Then you’re running out, chasing the effect, taking more etc. It’s risky.
I’m a hardcore amphetamines addict, take it from me that this cycle only gets deeper and deeper the longer you go.