[Canada] Oil change conditions for warranty

Apologies if this is the wrong place to ask!

I've got a 2025 Subaru with an extended warranty. The maintenance schedule calls for oil changes every 10,000 KM or 6 months, whichever comes first. I'm only at ~8,500 KM right now but just realized the 6 month mark would have been early July so I'm currently at about 7 months.

1. Is this a concern for the warranty? I understand if they can link the lack of oil change to a specific mechanical problem, then I'm SOL. But how likely is it that being one month late, but still under the KMs, would give them the grounds to do that with?

2. The earliest appointment at Subaru is August 10. Is it safer to go to a quick lube place (as sketchy as those can be) to get it in earlier, or better to stick with the dealership?

3. Should I proactively email the dealership on this to advise, if only to get some assurance in writing that missing it by a month is fine?

Thank you all!