Trunks Timeline where he brings Goku the medicine!

When Trunks came to bring Goku the medicine did he already kill his androids or was he heading back to kill them himself. The reason I ask this; he doesn't train, I don't believe he even actually grabbed the blueprints to defeat the Androids. Does he go to a timeline where the androids are dead or does he have the blueprints to build the remote or does he go back and kill them? I understand the other aspects of the other 3 timelines, that cell is from one where he kills Trunks after coming back the 2nd time, but what happens with the "Original future Trunks"

EDIT: I didn't think about him going back and waiting the 8 months then travelling back into the past but 3 years later, I THOUGHT that he went back to fight the Androids again, I now realize that he went back into the future to kill the androids the second time he comes back to the future.