she will never be 30lbs at this pace, and our seat RF's until 35

She was 24.5lbs at 2yo and now 27lbs at 3 years 4 months.
My main issue is she hollers bloody murder every time we are in the car more than 5-10 minutes and we live in a kinda rural area, so most things take a good car ride to get to. Not sure turning her around would help or not.
I would like to keep her RFing for a long time, but car rides are becoming so dreadful for me and no one i know is helpful because they all think i am the silly one for still RFing

I was thinking i could turn her and see if she stops screaming, but then she would never turn back, so that plan is probably not a good one.