First time mom! Help.

What do I do when she only wants to eat for 6 minutes!? She won’t latch again and is closing her lips tightly. I’ve tried repositioning her, burping her to wake her up a little. She ate at 10am last (2.5 oz), had to bottle feed this morning was too engorged to nurse. She does this at night every once and awhile and will go back to sleep for 3-4 hrs. I had a fast let down could she just be getting enough and she’s done? She doesn’t do this often. She’s 2 weeks old tomorrow, born November 29th