Does it help that this is our life as well? My 22 month is looking like he could be gifted as well (I've written on here about his obsession with clocks) and his behavior, previously seemed like the easiest baby ever has switched. I'm up to my ears. It's like I need a team just to get simple tasks done, to minimally survive. It's basically newborn mode but it's not that temporary. My oldest is 4 in three weeks.
I feel for you!!!