1)Avoid keeping fish with shrimps as most fish will eat the shrimplets.
Probably, only the Chili Rasboras are safe with the shrimplets. (but still not 100% guarantee)
2)Use bright light(8-12 hours per day) for the first 1-2 months for the algae to grow as much as possible.
You can reduce the lighting brightness and the number of hours when your tank have enough algae.
The shrimps will graze at the algae whole day especially the shrimplets.
Keep a lot of Java Moss for the shrimplets to hide.
3)Use Bacter AE to promote the growth of biofilms. But don't dose too much as it may cause a spike in ammonia.
Don't follow the manufacturer's instruction as it's too much.
Shrimps and shrimplets will feed on biofilms.
https://www.glasgarten-aquarium.de/english/bacter_ae.html
Add some driftwoods and plants (such as Anacharis Elodea, Hornworts, Cabomba).
These will provide more surface areas for the biofilms to grow.
Some fish stores even put big pieces of sponge pads instead of sand or gravel at bottom of the tank for the shrimplets to hide and easy cleaning.
If you have sand or gravel, you have to be careful not to siphon out the shrimplets during your tank maintenance/cleaning.
I covered my siphon with fine net during the cleaning of my tank.
4)Get some powder food for the shrimplets.
And get different varieties of food for the adult shrimps.
Get some shrimps food that contain high Calcium, Beta-glucan(to improve immune system), etc.
Mulberry and Kale have high Calcium. - You can find them in pellets form or you can use the fresh plants to feed them.
For fresh plants, I soak them in hot water to soften the plants before feeding them to the shrimps.
They also need some Protein especially for female that are carrying babies.
Some brands of shrimp food:
1)GlasGarten - Shrimp Baby, Shrimp Dinner Pad, Bacter AE, ShrimpFit, etc
2)Dennerle - Crustagan Baby, Shrimp King Complete, etc
3)Borneo Wild
4)Hikari - Crab cuisine, Mini algae wafer
Some examples of shrimp food:
green-chapter-shop.myshopify.com
www.hikari.info
More information for your reading:
Keep your water parameters in the proper range and make sure shrimplets have access to an abundant amount of food. Balance the feeding with powdered food.
aquariumbreeder.com
aquariuminfo.org