Tomorrow I would grab a bundle of anacharis or other dense floating plants and put it in your tank. It allows them to hide and to be blunt, the adults will cull the weaker ones. You can feed with crushed flakes or first bites.
If you want to you can get another tank and put them in there but you would have to seed the filter.
Or you can get a cloth or small holed net, net em all up and leave the net in the tank with the opening out of water. This allows them to have good water quality and safety. you can also easily feed them this way.
Livebearer fry are forgiving typically so you should be alright. Don't worry. Any questions you have the community can help with.
“Books are my friends, my companions. They make me laugh and cry and find meaning in life.” ― Christopher Paolini, Eragon
"By books you mean fish, right?" ― Raymond