I am looking into some type of bath seat for my 3 month old. We never purchased an infant bathtub since I knew it wouldn't get used for very long. the first month, he bathed with me. And now I take him into the shower with me.

But I'd like to get a solid bedtime routine going that involves a bath, so i need something to hold him up.

Can a bumbo be used? I have one of those.