I think what he was trying to say is that he has a 1 month worth of comics done that are waiting to be published, and if he would sent a new one it would get it's turn in one month ...
"I think the soonest I can get something published is in about a month ... it wasn't worth the extra friction to push them to the front of the line"
So if he had made a big push, he could have gotten them published in a month. He goes on to say when it would be published if he submitted it at the end of his queue.
"And it would be June 18th before they ran in their normal position, which seemed too far in the future."
