Double majoring in Anthropology and Psychology?
You should find out how many courses it takes to complete each major at your school. Then plot out how you could take those courses over the next three years. To complete a double major on time you need to plan ahead. If it seems like too much work, you could always take a minor in one. If you’re definite on Psychology, I would declare that major first. Continue taking courses in both departments. You can always declare the second major later–it doesn’t really matter when you actually declare. Good luck!