Just to add to the blackout blinds, we were having exactly the same problem with our ds, where he'd wake to start the day at 5.30 after dropping his night feeds. Regardless of whether I fed him or not, he wouldn't go back to sleep without some A time, which I certainly wasn't ready for at that time in the morning! We had blackout blinds but they still let some light in through the sides. Eventually, we taped the blinds to the window, so hardly any light comes in, and now he sleeps through til at least 7am most mornings. I had to wake him up myself this morning at 7.30, so he was obviously never hungry, just woken by the light!
Also, I wouldn't worry too much if your lo is making noises but not sounding distressed. Occasionally, my lo will wake at 6 and make noises for a while. Usually he'll put himself back to sleep, sometimes he'll chatter to himself until it's time for me to wake him. I try to ignore it unless he sounds like he needs me!
Good luck!