Night feeds getting earlier


My baby is 6.5 months old and is sleep trained and able to sleep on own. She typically still wakes for one feeding before waking up for the day Around 7am and her bed time is around 6-7pm. However lately Ive noticed that she has been waking up earlier and earlier during the night. For example: sunday she wakes at 530am, monday she wakes at 430am,tues she wakes at 3am, yesterday at 1am and today at 12am. Is this possibly a growth spurt orf some sort ??? šŸ¤”šŸ¤”šŸ¤” i usually wait around 10 mins before i go in and feed her at night and will only if her whining/crying is slowly getting louder. Should i wait longer before going in??