[mistermikev]

"Eventhough its only a fish, it a living thing that i took responsibility for and i would feel bad taking it back to the LFS where I know for sure it will die."
You took it now its on your head. Don't encourage them by getting another. dont put it through the shock of another move. What size tank is this? Most will tell ya you don't do one of these unless you have a 75g or better and a fuge. He will eat pods to extinction and then die w/o refuge. Go check rc for many resources about feeding him.
I would...
brew up some baby brine shrimp. You can even make yer own but I like the box with cup best. add some phyto to the cup for good measure. This one wants live so give him live... baby brine is better for him than pods. Once you got him waiting at the tank for more babies start trying frozen baby brine. Once you have him on frozen try adding crushed spirulina flakes.
If this one dies don't get another. At least then you won't be the one responsible. If you turn this one around I dought you will be able to keep the next one and it is not worth finding out at the cost of another guy.
Don't get me wrong... I love em too. Kept one alive in my 29 for almost two years(actually a scooter blenny). My sand went a little bad and poof. He was the biggest scooter I ever saw. Got him as a tiny little baby. I did the same thing - won't do it again.