I have very difficulty to produce breast milk. I produce only 4 oz a day. Almost give up, can anyone give me advice on how to increase quantity?

This is what im doing. 1. Drink red dates,dried longan n goji berry everyday - either self made or ready made 2. Drink warm water - lets your body feel warm to stimulate the milk produce n prevent engorgeme t 3. I'm using haaka instead pump. While breastfeed my baby, i let the haaka suck the others. Cuz, everytime baby drink, it will stimulate the others side. So, no waste 😄 4. No stress n no hungry 😄don't dehydrate. 5. Bath with warm water but mine quite hot actually. 6. Massage 😍 love it cuz sometime when body too tired it also effect the production cuz mine also happen like that esp when im sick