I'm having a lot of trouble figuring out how to get my baby in/out of the rear facing car seat. It's the tether straps - I find it incredibly awkward getting her under or over them (7 week old) & have no idea how I will manage as she gets bigger. I am pretty short & drive an SUV so maybe that's part of my problem. What do others do? Do you undo the tether strap each time? Or are there some other tricks I don't know about? Cheers!