Hello i keep asking questions about Jumperoos. I want to get it for Tabs for Christmas and i want to use that free delivery code for argos that someone kindly posted with the special offer price it is on at the moment. The thing is.......should i give it to her early?? 4 months old,or wait till Christmas?? when she will be 6 months old. Those who have it in your honest opinion did your LO's benefit/enjoy/do things in it at 4 months of age? or is 6 months more beneficial for stimulation? Also how long can they be in it? is there a weight/ restriction?