Blimey, you seem to be getting a hard time OP.
We aim to have her sleep 7:30 to 7:30 but she often wakes up around 6-6:30 screams for up to 10 minutes and falls asleep again until 7:15-7:30
The wake probably is hunger, but not starving and I must be fed hungry, as is evident from her whining, self setting and going back to sleep.
Also realise that breastfeeding is about far more than calories. It's more about comfort at this age. Baby may well be waking and might be settled by a hand on chest or similar. But since she's self settling I wouldn't say this is needed.
If the 6am wake is especially bothering you, I can think of 3 solutions:
(1) make bedtime later. 11h sleep at night is to be expected for another 6-12 months, so you do well to get 12h. If bedtime was 8pm, wake would probably be 7am ish
(2) try a dream feed. Not perminantly, just until this 11h hunger is grown out of. So lift, wake and feed baby when you go to bed. Add in a nappy change to help her feel more comfortable in the morning.
(3) just wait. Given you don't have to go in and settle her, switch the monitor into lie and leave her to go back to sleep. She'll grow out of it in time.