Breastmilk

Y’all since my baby was born breastfeeding for me has been a little complicated. My baby wouldn’t latch on right so I had to use a nipple shield so I decided to just pump my milk out and give it to her from the bottle. I would at least try and actually breastfeed her once a day, but now she doesn’t want it at all and I’ve been pumping still but now my supply has gone down! My baby is about to be 9 months in a couple of days. I just wanted to know what have some of you moms done to make more milk?