Daddy is ready with a helping hand, just in case
Not exactly straight, but pretty balanced, and he's been good at sticking an arm out if he starts toppling for a while now (the little arm isn't always strong enough to support him ... but I think sitting is going to help with arm strength.) Being able to study his own feet is some extra motivation.
Today he was sitting like this!
With all of this sitting going on, we're looking forward to seeing how E takes to sitting in a high chair during meals. He's been getting pretty antsy hanging out in his swing lately, we think he wants to feel more included!