Milk supply

Hello!! I’m 8 days pp. My daughter was born at 34 weeks via c section and is currently in the nicu but is doing great! I’ve been trying to pump and they supplement with formula. I cannot breastfeed yet because they are monitoring her intake.

For the first few days at the hospital, I was pumping the usual every 3hrs for 15min.

When I was discharged there were some issues getting a pump which caused me to be inconsistent with pumping unless I was at the hospital using theirs.

I’m now 8 days pp and have a very low to none milk supply.

Is there anything I can do to bring the milk back?

By not being consistent in the beginning days did I mess up my chances?

Any advice would be great!! Thank you!!