Seeking feedback on my 10K progress from 68 min to 56 min in 2 years 🏃‍♂️

Hey everyone 👋

I’ve been running on and off for the last two years about 300–400 km and managed to improve my 10K time from 68 minutes to 56 minutes.
I’m 35, working full-time, and usually train 3–4 days a week.

I’d love some feedback from fellow runners:
👉 Is it realistic to aim for a sub-45 min 10K in the next 2–3 years if I keep running ~300 km+ per year?
👉 Any specific workouts or mileage patterns that helped you improve beyond this stage?

Would really appreciate your thoughts or advice. Thanks and happy running! 🏃‍♂️

Here’s my progress playlist so far — open to any feedback:
🎥 My 10K Progress Playlist