How do I boost my milk supply😔

I started out doing amazing pumping 100+ml from EACH boob and it gradually got lower and dropped to 100ml from both boobs together, and now I’m lucky if I get 70ml with both boobs together.

My right producers most of the milk

Right usually: 50ml

Left boob usually like 20ml

I pump every 3 hours for around 40mins

I try and drink as much water as possible however my eating habits aren’t great although I do best as it’s so hard because my daughter is in hospital and I’m busy so eat quick and on the go.

My daughter is premature born at 26 weeks, she’s now 7 weeks old and they’re going to try introduce breast feeding any day now

I’m SO nervous about it all, I scared I won’t be able to do it because of not having enough supply

How do I boost it😔 preferably naturally but whatever works best

I already feel like I’ve failed because of going in labour and giving birth so early (via emergency c section) , I really don’t want to be unable to breastfeed as well, not only will I feel bad that my daughter is missing out on the best food possible for her but I don’t think I can take it mentally.

Just feels like I can’t do anything right!😔

Sorry to sound so depressing I’m just so upset and these groups I feel are the only place I can go where people actually listen and have good advice X