Our oldest lo is 3 and a half and already displays many traits of ADHD. Question is what's normal 3 year old hyperness and what's book hyperactivity? My SO and I are exhausted by the weekend's end and as a SAHM with 3 total including the new addition here (3 week old) my nerves have become short circuit lately, which is bumming me out and giving me the I-feel-like-a-bad-mommy blues.