Recipe used jaggery paste. For a more Whole Food Plant-Based recipe, we may use dates or date sugar or date syrup, added in the end, after straining.
This video has an interesting idea: we could dehydrate melon seeds, then store them for several weeks. Whenever we wish to make melon seed milk, we may mix dried melon seeds with water, blend them together, then strain the mixture to make melon seed milk.