DD1 rf until about 14 mos then went ff, didn't know better then , she was about 21 lbs , and would have been over the height limit of 32 " on her alpha omega ( which she outgrew totally at 2 years old )
DD2 rf until 20 mos all the time, but rf until around 3 for longer trips , then went back rf between 3 year 9 mos and around 4 years. has been ff permanently since , she is too tall for the radian now at 4 years 7 mos but still under the weight limit and wears a cast that would have been difficult ot get her into the seat now as well .
DD3 is still rf at 2 years 5 mos , not sure when I will turn her , currently rides in a truefit or radian , but my daycare child is nearly too big for the truefit so she will be just in that until she hits 35 lbs ( currently 30 lbs )