Your new 2nd year maintenance for your Model X are:
1) Cabin Air Filter / 2 years
2) Rotation, Balance, Wheel Alignment 10,000-12,000 miles
3) Brake Fluid Test / 2 years
Prior to that, an inspection plan would also do:
3) Brake Fluid replacement, not test.
4) A/C desiccant bag replacement
5) Key fob battery replacement (set)
6) Wiper blade set replacement
7) Multi-point inspection
I think the one that costs Tesla the most is the last item, number 7, inspection.
If there's no inspection, then there's nothing wrong to be discovered and fixed.
In the past since 2012, Tesla did my inspections and fixed my things for free that were totally unrelated to maintenance.
So, I would go ahead and keep your appointment but I would pay for current recommended items from 1 through 3.
The old inspection plan would cost you $825 this single time so I think you won't pay that much if you forego that and only go for 3 items this time.