I think practice and learning new techniques is starting to pay off. Five days on a blade isn't that unusual...a lot depends on your beard. Some guys can easily go a week, others may want to switch after 1 or 2 days. That being said, I'd probably dump that blade now...it's got to be close to reaching the end, and there's no reason to play around with your face at this point. Blades are dirt cheap...don't be a penny pincher and see how far you can push them at this point. Maybe once you perfect your skills and are getting consistently fine shaves, then you can experiment, but for now, switch it out and focus on what you did right today.
Vintage Human: Vintage Razors, Vintage Brushes, Vintage Fountain Pens