Planning to start the 16 week big mountain training plan next week. I saw that the largest amount of volume in a week on that plan is 11:45. I’m hoping to work up to logging about 15-16 hours per week on average. This will be the first time that I’ve attempted to stick to a specific training plan, but on average I’ve probably logged about 500-600 hours per year the past couple years? A lot of that time has been in sort of a middle aerobic zone (not easy, not hard), that I’m learning now is maybe better to avoid? Any advice for adding volume to the 16 week big mountain training plan? General goal is to get in shape to do longer/ faster days splitboarding this winter. Thanks in advance.