I think this looks pretty good, especially for this DI engine. While TBN still good, viscosity and fuel dilution are starting to erode, so to me 6-7,000 miles seems a reasonable OCI for your driving conditions. What did the OLM read when you changed?
Oil Analyzers/Polaris will seemingly always show higher fuel dilution than Blackstone, so the 1.9% is actually a pretty good result. Oil Analyzers tells me DI engines typically show 2-4% dilution in their tests, so yours is doing well. (Well, not as well as a non-DI engine, but that's another story.)