At 3 months, a sudden refusal to latch usually comes from positioning, a very full breast, or your baby preferring the faster flow of a bottle. It is rarely about your milk itself.
Next Steps
Try skin to skin contact just before each feed. Hand express a little milk first if your breast feels tight, since this makes the nipple easier to grasp. Different holds, like the football hold or side-lying, can also help.
Health Tips
If your baby's wet diapers drop or her weight gain slows down, see a lactation consultant or your paediatrician soon to check her feeding.