He told the Press Association: “It’s been an interesting challenge for me, I’m super excited. As a filmmaker it’s a wonderful opportunity and I want to do the best job I can.
“But I’m also responsible for making a film about my husband. And our sons are going to inherit that legacy, so the legacy we leave with that film – cinema is such a powerful thing – we want to make sure we do our best to get it right.
“I’m excited but I have a few sleepless nights because I feel a profound sense of responsibility to get it right.”
The 56-year-old said that the pop luminary wanted to ensure his unique life story had an appropriately special film to celebrate it.
He said: “In typical Elton fashion he said ‘I don’t want a straightforward biopic, my life has been too crazy to just tell it in a very linear, unimaginative way.’