So I know that when a convertible car seat is rear facing, the shoulder straps should be at or below LO's shoulder level.
I put the shoulder straps in the middle slot and it seems to *just* at shoulder level, but only if she's sitting up perfectly. Otherwise, if she's slouching at all in the seat, it slightly below her shoulders. Should I just switch the straps to the lowest slot until her shoulders are well above the 2nd slot, or is it unsafe to have the straps "too below" shoulder level?