J.T.
Usually they recommend the jumpers once the child is able to hold their own head up. It does sound like something that you may want to slowly introduce him too. I personally don't have the door way jumper, but I have the Jumperoo. And my son loves it. He has been going in his Jumperoo since he was 3 months old. I would have to say that was probably one of the best gifts that I received at my baby shower. Definitely a good investment and entertains for long periods of time.