Finally all 3 of them are eating. Not much just a little, but they are finally eating. They still look very weak with very very pale coloration. But it is a great relief that they are finally eating and swimming around.
I am guessing that you cannot leave them overnight in a 1 teaspoon of aquarium salt/0.5 gallon during treatment, it will weaken them seriously. I have been doing daily 50% water changes for them with a 3ml of ketapang extract in 0.5 gallon after day 4, maybe the ketapang helped in soothing them?
The rest of the jarred fry is now cleared of fungus. From now on I am going to add 1% salt concentration during water change to prevent an outbreak of fungus attack and take greater note of the condition of my ketapang extract.