Can a breastfeeding mother take larger vitamin d supplements to allow it to pass down through breastmilk rather than supplementing with a vitamin d drop directly to the infant? how much sun would a baby need daily if they didnt take it?

Breast milk alone does not provide infants with an adequate amount of vitamin D. Shortly after birth, most infants will need an additional source of vitamin D. To reduce the risk of skin cancer from sun exposure, keep infants younger than 6 months out of direct sunlight. ref: https://www.cdc.gov/breastfeeding/breastfeeding-special-circumstances/diet-and-micronutrients/vitamin-d.html

If you follow official recommendations of the American Academy of Pediatrics, you supplement with Vitamin D for the first year of life. Vitamin A, C and D supplementation has been recommended for over sixty years. We do not recommend exposing infants to sun in the pursuit of vitamin D.