A Few EDITS (also just realized this post was old, oops!):
From my experience with MULTIPLE attempts (seriously too many to count, its effed up I am still here, some say it was a miracle...TBD), you will not succeed if anyone is in that house. It has to be better planned. I am so sorry. I know how much this sucks. I know you have your mind set up. But I can also tell you, if you don't succeed, waking up is awful (for me anyway) - well for anyone who has been caught and then has to go into a psych ward. It's really SUCKS to fail. Although there was a time I was glad I failed.
Anyway, Idk what other options, and what you're willing to do. But figured I'd warn you if there is the slightest chance someone will catch you. Unless your method is quick. And with such short notice, you'd need to combine multiple methods - maybe some sedating drugs and alcohol; bag over head, taped tight around neck and then very quickly tape your hands up, if possible to avoid pulling the bag off.
And if you need to talk, please dont hesitate to reach out!