You should notice a difference, so this doesn’t appear to be the right medication or dose for you. Doctors start at the lowest dose and increase only if and when needed. That’s the standard best practices for prescribing ADHD medication. Reach out to your prescribing doctor and discuss this.
And learn more about the process and what to expect from ADHD medication:
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism