Can a 4m old use a bouncer? She's able to support her head and likes to be held up to stand upright. She seems to like it. She doesn't cry and she is loving the toys. I don't keep her In it long because I know she's young. I just thought it would be a nice change for her since shes starting to hate to be placed down in her pack or play rocker.shes able to touch the floor a little but she has to tip toe a bit or put her weight down on one side if she wants to plant her foot.