Kav Halacha is an English-language halachic hotline in Israel.
Someone [an adult!] with a kidney transplant called to ask about Yom Kippur, and was told to have 30 CC every 9 minutes.
This is not the shiur at all! Nor were they told anything else.
Thankfully, they then checked out organization Matnat Chaim’s expert guidelines:
Big difference, no?