Honestly I’m not sure why you’d change a thing…you went up a huge amount during your off season and you are maintaining the same fitness throughout the race season.
This is exactly as expected - you shouldn’t really be seeing continuous gains year round.
You’re already at high volume. dive into the same plans this off season and see how you progress. Adjust after you spent an entire base/build/specialty progression and don’t improve
The various suggestions others have made are sound, but you’re risking over-training for a problem you might not even have. Don’t put yourself through that until you’re sure you’ve hit your peak based on the current volume