A piece of advice I’d say is do not forget to pump at night. I know sleep is short and scarce right now but you need to do at least one or two pumps during the night.
when I get up to pee or drink water, I just turn my pump on and relax. It stinks to get to but you need to empty for more milk to come 
My June baby has been sleeping through the night for weeks which is wonderful. But I know I can’t skip those night pumps if I want milk to keep coming let’s all support one another through theater night pump sessions!!