Fenugreek tea
I woudont do fenugreek until you’ve tried everything else. Sometimes that can affect people and make their supply dry up. I’d try Staying hydrated and fed Body armour Blue Gatorade Oatmeal Ledgendairy milk supplements Pumping and feeding more often. Maybe pumping in between feeds. And if nothing else works then I’d wean your toddler to be able to have enough milk for the newborn who needs it more.
I’m also working three days a week