We got three new babies yesterday & started putting a vitamin/electrolyte mixture into their waterer. I read in Gail Damerow's Storey's Guide to Raising Chickens to use vitamin/electrolytes in the waterer for one week for new chicks, or for three weeks if the chicks have been shipped. Since mine have were shipped, do I need to continue to use it for three weeks? It seems like a long time and I don't want to give them too much of it, so please let me know what you do with your babies! Thanks!