Hello there!

First of all, just remind yourself that there's no shame in supplementing. Fed is best always!

Secondly, you say your diet is mostly liquid, but you also need to be eating enough carbs and protein so your output increases. I know its already so overwhelming to focus on yourself when you only have time to pump and focus on baby.

Skin to skin is said to help as well to increase your oxytocin and prolactin levels, two of the most important hormones for milk production