What age or stage of development did you start using a Bumbo?
We bought one for DD2, we borrowed a similar one for DD1 and she loved it, but it was much later that we put her in and she was able to support herself.
DD2 is just over 4 months old/or if we bother about correcting ;), 3 months. She isn't rolling or trying to yet, but will get there in her own time. Her head control is pretty good, but still "flies" off randomly at times.
Just curious as to when you started using it and for how long at a time.
TIA :) xxoo