Pregnant...supply tanking!!! 😩

Well my daughter is about 11.5mos old so I’m really close to my 1 year goal 🙌🏼 before wanting to start weaning. However I recently found out I’m pregnant again (almost 5 weeks) and my supply is tanking and FAST. My breasts used to be very full in the morning they’re way softer now. And when I pump before bed (3-4hrs after her last session) I get about 1.5oz now when before I’d get 3-4oz. Can’t really take supplements anymore. Don’t know what to do 😬 how does anyone continue to nurse while pregnant??? I’ve never had a huge supply to begin with. I only have about 25oz in the freezer. I wanted to try to keep my supply up to slowly wean her by cutting back on sessions and gradually mix frozen milk with regular cows milk. However based on how little I’m producing now I’m not sure that will be the case. I’ll be lucky if I can make it till September 11th for just my goal date lol. From what I read online on KellyMom doesn’t look like there is much you can do about it either it’s just a hormone thing. 😭 Ughhhh I hope I can at least make it till she’s 1...only 17 days to go!!!🤞🏼🤞🏼🤞🏼