I had two chicks that couldn't walk and were really weak and just slept a lot, I nursed them round the clock for a few days, unfortunately they didnt survive :( I hope yours make it!!
I had a recent tip from a friend recommending the use of heating pads and extra warmth to get a "shocked" chick perked up. Between doing that and frequent dips/drinks of water hopefully you can help them thrive after this rough trip. Best of luck to you and your babies!!