I'm also a NICU mum, I could never get as good of an output with an elvie as I did with the hospital pump, I rented an ARDO from the hospital but you can also rent them privately beyond your hospital stay x
I didn’t find the elvie very good at keeping up my supply when it was hard to get it going in the first place to be honest!
I expressed purely with pippeta. My supply was never great and gradually dwindled off after 7 weeks. I'm also a NICU mum x