Blake, 30, was found choking in his bed by his girlfriend Sarah Aspin and was rushed to hospital in Dewsbury, West Yorkshire where doctors put him in an induced coma.
Mitch Winehouse first shared the news of the troubled star's hospitalisation on Tuesday and urged his daughter's fans to "pray" for Blake's recovery for Amy Winehouse, who was tragically found dead in her London home last July.
He posted: "Terrible news about Blake this morning. Remember Amy loved him. Let's pray for his recovery. Mitch''.
Sarah, the mother of the recovering heroin addict's 15-month-old son, recently revealed she was expecting the worst, saying: "I'm praying he'll survive, but I'm having to prepare myself that he may never wake up."
Blake and Back To Black singer Amy wed in 2007 and divorced two years later.
- BANG! SHOWBIZ