The writer told the Radio Times that he plans to "starve" and "tease" viewers in the run-up to future episodes.
"Get used to a bit of starvation," he said. "We're making movies - those six films we've made could go in the cinema. You can't factory produce that - it's a different kind of show.
"So, when we're good and ready - it won't be that long - but when we're ready, you'll get the follow-up."
Moffat also confirmed that a third series of Sherlock was commissioned alongside the second run back in 2010.
"We knew we had this cliffhanger coming, we knew that we were doing 'The Final Problem', and we did not want people to know that [Holmes] survived," he explained.
"We wanted to wind the audience up so that the final shot [of series two] would have the impact that it evidently did.
"We were commissioned for series two and series three at the same time, but we decided to keep it under wraps that day that series three was in the bag."
The second series of Sherlock concluded on Sunday night, pulling in 7.9m for BBC One.
> Steven Moffat: 'Sherlock fans have missed big clue'
> Elementary: CBS develops 'modern-day Sherlock Holmes' pilot
Watch a clip from the Sherlock series two finale below: