Do you have Tractor Supply or other feed stores around? Most of them sell vitamins and usually Nutri-drench. It can also be bought off-line. Molasses water works well to. Saved our chick that had a heat stroke!
I don't think it was a bad decision. Lot's of people get them vaccinated. I have never ordered from a hatchery so I have not. Non-medicated feed is good. I try to feed that regardless of vaccination and didn't know that it nullifiyed! Thanks for sharing!
Everything sounds good to me. Sounds like you just had a weak chick. I lose some sometimes too. You did right with the sugar water and all. I usually don't put things in the water unless I feel I need to so I will let someone else answer that one!
Sorry about your chick and Good Luck with the...