I’m about to have my 3rd child in a month. I have her car seat but my almost 3 year old and 4 year old need booster seats that will fit on the sides of the car seat. I need to fit 3 in a row . Anyone can recommend a safe one?? I’m doing so much research and can’t find a good one . A lot say that the head rest falls on some and that some say the wrong height and weight online and that some don’t have latches 😩