Hello there. This morning I woke up to one of my little week old chickies laying in its substrate. I reached in to pick it up, and the chick made no efforts to run or stand up. It's peeping mostly normally, and still has a full crop. I doubt that'll stay that way for long. The chick can only lay on both its hocks. When I hold the chick upside-down, its legs tremble awfully. I am feeding unmedicated crumble, Nature Wise chick starter and grower, 18 percent. The chicks are on pine shavings. Currently, I have Sav-A-Chick electrolyte solution and Brewer's yeast tablets. Should I add either of those to this lil guy's food/water? Anything else? I have attached pictures. Please help, thank you .