I understand your grief I lost a baby chick in April 2021 with same circumstances he won't make it after medication he became all worse I miss him ..but someone Demise is sometimes eye opener
I never give higher doses never follow the instructions by someone for Medicine .
Always in future anytime if u have a situation where u need ti give Suppliments to a CHICEKN always go a smaller drop less then a tiny drop also work like a speed of light . I always dilute one with spoon of water it becomes more lite ..
A lite dose won't hurt the way a High dose hurt even become fatal because chicken heart beating at 300-400 per min they can easily get heart attack with a high dose and die so on a safe side a small drop is enough seeing the process