You have many issues which should be discussed immediately with competent criminal defense counsel. The legal sufficiency of the warrant (you do not indicate whether it was a search warrant or arrest warrant) should be analyzed and challenged. The weight of contraband attributed to the defendant must be verified by the lab. I am sure you and your father take his freedom very seriously. There are some excellent defense attorneys in the Schoharie County area, that can assist you.
This answer is for information only and is not intended to be legal advice.