Would keep up with water changes (maybe twice weekly) ,and try not to disturb the fish/eggs.
If eggs do not fungus and are fertilized,then fry should appear within a few day's and clean water will help keep eggs from becoming fungused.
Would look for some fry food, and or crushed up flake or pellet foods,(mix with aquarium water) and use turkey baster to squirt small amount of food near the fry three or four times a day when they become free swimming.
Can be tough maintaining water quality while feeding fry more frequently than adult fish so more frequent water changes may be needed.
If fish eat the eggs, or they all fungus,the adult's will try again and this happen's sometimes three or four times before successful hatch.
Some folks try and remove eggs to hatch them and use methylene blue to ward off fungus but theyr'e success rate is not much better than if fishes are left to their own way.