I think we started the Bumbo a little before 3 months. DD has always had good head control from an early age. We bought her an exersaucer and jumper when she turned 4 months old.
I pretty much just started both. The bumbo she's doing great in. The exersaucer she's still too small for so I need a pillow under her feet and a blanket at her back. We try for a couple minutes a day - loves it - but needs to grow into it
We use the Bumbo for very short periods of time right now. I was taking pictures today and in some it looks like she's going to climb right out. I can't trust her for a second in it between the leaning to look at things and arching/trying to stand!
Re: when did you start the bumbo seat?
LO should have good head control for both.
DS started using the bumbo around 1.5 months.
Bumbo- 2.5 months
Exersaucer- 3.5 months
DD1 born 5/24/10.
Missed M/C at 14 wks Feb 2012.
DD2 born 5/14/13.
Missed M/C at 9 wks July 2015.