My DD (2 years, 9 months) has discovered that she can slide down her chest clip and get her arms out of the straps on her Diono Radian RXT. She is still rear-facing, and wiggles her arms out to try to turn around and see/talk to me. Is there anything I can do to immobilize it? I see that there are velcro closures that can go over it to keep it from being unbuckled by the child, but she's not unbuckling it. She is about 30 lbs. 33", so not near the seat limits for RF. Still I'm tempted to turn her FF in hopes that she would stay in her straps since she could "see" me then. I figure strapped securely FF has to be safer than RF with her arms out! Help!!