Does anyone else think Eric and Dylan secretly both backed out of the massacre?

It’s just a thought i’ve had for a while now. You gotta remember Eric was starting to see a girl about a month or so leading up to the attack and even watched a movie with her at his house during prom, and Dylan was doing his own thing visiting college campuses for when after he would graduate high school. It makes me wonder and feel as if Eric and Dylan both or at least one of them wanted to back out of the massacre at least a few months before they did it, but either one of them or both were scared to admit it because it was already planned so throughly and were too far in to the plans, already having most of the guns and other equipment they needed. Has anyone else thought this?