I've been gathering up a lot of information about the Pacific War and most of the threads I've seen at some point mention how the Japanese were on a tight schedule and how Japanese needed everything to go just right. I'm wondering what was the Japanese contingency if their coup d'main turned sluggish. Like had the invasions of Malaya and Philippines bogged down quickly and the Japanese suffered high casualties, what was Japan's plan? Just send in more troops and if so where would these troops come from? Also how would the bogged down campaigns affect the other campaigns the Japanese were launching in early 1942, or this the "tight schedule" over exaggerated?