Dip in Milk Supply

Ha

So I have been breastfeeding( pumping while at work) my son is 9 months old now, Yayy!! Well I am 5 weeks pregnant and my supply is going away! I had an over production in the beginning! Any advice 🤷🏼‍♀️🤦🏼‍♀️😳😫😫😫🥺