Yes, you might want to wait and see what happens. Could a friend or a neighbor help you to give him the shots? I know you said he's skittish. Since I don't have any help with my cats, I've bought a cat sack and a few klaw kontrol bags. When you put the cat in these, they can't run away. They're great to use for giving meds or for trimming nails. I used one of these when I had to give Starr some vitamin B-12 shots. Here's the link to them: http://www.fourflags.com/s.nl/sc.2/category.3950/.f and http://www.drsfostersmith.com/produc...fm?pcatid=3159. Good luck.