We took ours out when she hit the height requirement listed on the seat but she looked lost in it, we took her into the store we bought it and they advised we put it back in and ignored the height guidance and just went on our judgement of when she looked secure and that she filled out the seat and didn’t move around in it. We had her in it for another 3 months after she hit the height but she is very petite weight wise! (15th centile weight, 96th centile height). Can you go into the store you bought it for advice? X
It’s fit dependent, have you got a picture?x