Hi.. my baby is 6 months old..She roughly sleeps by 11 pm every night...

She gets my feed throughout night whenever she is awake and sleep back... And next day mrng 7 Am or 8 she get my feed and sleep till 11 am or 12Pm.. Is this sleeping pattern and her long gap intake of breastfeed normal ? And do i need to spilt some milk before feeding baby if its long gap from last feed... ??? She vomits more like thick curdy if i leave long gap and feed her... why this happen??