Re: Ergo infant insert
For my son, I didn't get the Ergo until he was 4 months old or so, so it wasn't an issue. I had used the Moby and then a mei tai with him until we got the Ergo, and then he was fine with his legs out by that point.
When DD arrived, I sometimes used a ring sling for her early on, and still use it occasionally (like if we go somewhere and both kids need to be worn, our toddler gets the Ergo). I had considered getting the insert for the Ergo for DD, but instead decided to just use blankets with her. I rolled a receiving blanket to put under her, then wrapped her with an Aiden & Anais swaddling blanket in a similar way as you'd put them in the insert, so that her legs were froggied. The blankets helped fill in the carrier a bit and give her more support, and I liked that they were so breathable since she was a summer baby.
Mommy to Grant (July 2010) and Greta (July 2012)
I purged 2,920 items in 2012! Working on 2,013 items for 2013.