Hi Sanjay!
I will just summarize my care schedule
I have 6 in a 55 gal, I assume you are moving yours to a larger tank once they get larger - I plan to keep mine in the 55 as adults, but from what I have seen there is nothing wrong with a smaller tank while they are growing, makes for less water used on changes too
Water Changes:
1x per day, 30 gallons, aged overnight. PH is ~8 and Nitrates at my tap are 10-15 so I run the water through a Nitrate adsorbing resin while in the aging barrel which strips the Nitrate.
Feeding:
2x per day my homemade food which is a mix of shrimp, salmon, halibut, peas, spinich, bananna (all baby foods), flake, Seachem GarlicGaurd, a small amount of a multivitamin and vitamin c, black worms from Al and oat flour to bind. I freeze this in blocks about 1" x 4" and slide them about 1/8" thick once frozen so they melt fast when added. It sounds more complicated than it is, cost is about 15 bucks and lasts a while! I recommend keeping it in blocks wrapped up and only slice up a block at a time as you need it to protect from freezerburn
1x per day flakes from the autofeeder when I am at work
1x per day some frozen bloodworms because they go insane for them, I feed these an hour before lights out because they eat every last bit so there is no cleanup after!
Thats about it, I spend about 45-60min a day dinking around with them but seeing them grow is worth it