Returning to Work - Question

Ashley • Boy Mom 💙 Dog Mom 🐶🐶

I go back to work in 5 weeks and am wondering if I should start pumping to build up my storage of breast milk. So far I have primarily been breast feeding my son. With the random pumping I have done, it has been given to him in a bottle later. For my fellow mamas that have already returned to work, how close to your return date did you start pumping to build up your storage?