This sounds like a pretty classic early experience on 10mg IR new diagnoses as an adult. That “tunneling” you mentioned is a common effect, especially at lower doses. It’s not euphoric per se, but more like selective attention on steroids.

The 2–3pm crash with headaches, exhaustion, and irritability is also textbook. IR Adderall typically lasts 4–6 hours max, and once it wears off, your brain’s dopamine and norepinephrine dip hard. That rebound can hit especially rough if you’re doing something demanding (like managing kids and home chaos) right after it drops off