Bedtime advice!?

My 5 1/2 month old basically set her own bedtime months ago at around midnight. This was not intended, it just happened that way, maybe because of my fiancés crazy work schedule and her being in the same room as us. She would sleep from midnight to noon with a few feedings. I've been bumping the time up little by little and now i try to put her to bed around 1030. She'll then wake to eat around 3 and again around 8, and she'll wake up for the day around 10-11 am. Sometimes there's a 3rd feeding during the night. Even after introducing solids which our pediatrician recommended, no change. After hearing so many negative things recently, what do you moms think about a later bedtime? I would love for her to go to bed earlier and to sleep a little bit better through the night, but she's getting enough sleep so I'm not sure what to do. any recommendations? How do your little ones sleep?