Lillebaby All Seasons

I bought the lillebaby all seasons carrier and used it very briefly around the house when my LO was 6 weeks and she was ok for the short time I had her in it. However I tried putting her in the newborn way (legs in with wide seat) at 8 weeks on an outing and she was very fussy and uncomfortable. A couple days later at her MD appt her weight was 13.8# and 24 inches. I tried googling when you could do the narrow seat with legs out, but there's no clear rule of when it's okay. I tried it the other day she's now almost 10 weeks and she actually falls asleep in the carrier and doesn't mind being in it. It's also way more comfortable for me with her legs out. I'm just concerned it's not safe or too early? How do you know when it's okay to put legs out? Or even do the front facing method? I'm nervous about the hip dysplasia. The instructions aren't too clear when you can move from the different styles. Anyone with experience using the lillebaby? By the way I love it so far!