How long to see results from triple feeding?

I am almost 6 weeks pp and our daughter is EBF. My milk came in hot on day 2 and we had no issue breastfeeding up until about a week ago. She was back to birth weight before 1 week old and transferred 2 oz in about 8 minutes during a weighted feed at 2.5 weeks old. I am not sure what caused it but my supply absolutely tanked around week 5. In the early days I was pumping the opposite breast and easily getting 4oz in 8 minutes. Now, I am pumping the opposite breast and barely squeezing out 1 ounce in 30 minutes. We don’t have another weight check until 8 weeks so I have decided to start pumping after nursing to hopefully increase my supply. I EBF my first in 2022 with no issue but I definitely never had a supply dip this soon. I am not sure how long I can keep up with the pumping with a toddler so I’m hoping results will be within a week or so? I don’t necessarily want an oversupply but I do want to be able to feed my baby without constantly stressing.