Need help making gel food asap!

[Miyavp]

So my goldfish roadrunner has SBD and I'm pretty sure his issues are stemming from internal parasites due to his symptoms and the fact he's not getting any better from peas or spinach and he wasnt constipated.

So...I ordered seachem meterdolizle stuff aka the stuff thats in metro meds and other medicated fish food. I made some food last night but didnt add enough gelitan to make it feedable.

Help I have frozen peas, brocolli and romaine lettuce and several packets of knox unflavored gelitan. Can someone please give me some numbers on how much gelitan to add how how much boiled vegitable matter? I hope this is the right section.