Speaking to TV Squad, Carter Bays further hinted that he regrets giving the comedy its title.
"We made our devil's bargain by calling the show How I Met Your Mother," he said. "It makes people not want to enjoy the journey as much as if it were The Ted Show."
However, Bays reassured fans of the show that he does have plans for how the programme will be wrapped up.
"We have all the information," he said. "We're not dropping hints that we don't know [the answer to]. With something like the goat, we don't know [what the entire story is] and that's just a fun writers' game for us because we have to figure out how to do a goat story.
"[But] the bigger stuff - the how and the where and the when of [the mother] - we know all that. We don't have the exact time frame; we know that it's probably two years, maybe three years, maybe four years. It's somewhere in that ballpark, so we do need to figure out how quickly or slowly we reveal the information that needs to be revealed and how quickly we have the dominoes fall that lead you to that event."
Bays added: "There are elements to it that don't have to do with the mother, and in that sense, it's a matter of pacing yourself and figuring out how long it [will] take you to get there and not making it boring along the way. Luckily, I think we have a story crafted for these next two seasons that has a lot of twists and turns and hopefully is a real journey for all the characters, not just Ted."
How I Met Your Mother airs on Mondays at 8/7c on CBS.
> 'HIMYM' execs 'not planning end date'