You've got what njc calls an impossible situation. You'll need to pull out "magic". And by magic I mean either actual magic or sci-fi-magic such as a self-propelled planet. Here's why...
First of all, understand that Earth's orbit is not just because we're spinning around a stellar body, but because the sun is so heavy, it can yank the entire planet around (and several others) like we're a bunch of pebbles

Our sun (and ours is rather tiny as far as suns go) will crush entire planets to dust if they get into the wrong place. And it would easily eat them all if they slowed down too much and "fell".
Your biggest challenge lies here:

Where the little sun is attempting to yank your planet out of the grasp of the bigger sun. Your planet cannot survive two suns acting in different directions. It will become an asteroid belt. Each sun will claim a portion of it.
(Actually, the smaller sun probably won't be able to beat the larger sun unless the planet is moving too quickly for the larger sun to hold it (in which case the smaller sun won't be able to hold it either, and your planet will go spinning into deep space. Wheee!))
There are more issues than that, but I picked the largest. Now I wish to turn the question around and ask what the goal is of this orbit. I ask this, so I can suggest something that may accomplish this goal rather than having to use magic