Re: Ergo infant insert
I got my first Ergo when my son was 1 so I didn't need the insert. When my second was due I bought the insert because I thought I'd use it. I HATED it. It comes with this pad thing that makes the baby sit up so high that he was both unsturdy and in my face. I used my ring sling for the first 6-8 weeks because it felt much more secure. When he got too heavy and was hurting my back I then switched to the Ergo and I simple swaddled him in a blanket and then just used the Ergo regularly. Alternatively, when he wouldn't stay swaddled I just rolled a receiving blanket and put it across the bottom under his butt for something to sit on. Before they are big enough to have their legs out around the sides you can put them in with their feet tucked up under them froggy style and it works really well. Hope that helps!
I've also used them with my girls - now 8 months so I've done it recently!