If anything, the Russians are moving in too fast. I think the Russians really were going for the 'decapitation', trying to quickly kill or capture the politicians in Kyiv, leaving the Ukrainians leaderless.

All signs point to this IMO. Russians have failed in that attempt this far, but it's only day 3.

Ukraine has been routing or killing a lot of airborne / paratroopers in and around Kyiv (Russian VDV units). Russia really is going for a quick victory, committing so many airborne units there.