Late Night Training: Week 1 of 3

Dearest All,

You must fully complete the campaign 17/17 for anyone in this tent to show.

I have the week 2 quest even though I never did the week 1 quest.
I'm wondering if I even need to do any of the ones leading up to the last quest to get the gear.
I tend to stay away from pvp because I just dont enjoy it very much (and I'm awful at it), but hero gear is hero gear

edit add : as Alowin said below, apparently you can complete multiple weeks of this quest in one go. Obviously we don't know how many yet, but at least the first two weeks.

I think I finally figured out what's going on with these quests:
During the first quarter of the season (6 weeks) all four quests were made available, unlocking one every week:

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• Early Morning Training, named as "Week 1 of 4", available since week 1
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• Late Night Training: Week 1 of 3, named as "Week 2 of 4", available since week 2
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• Midnight Training: Week 2 of 3, named as "Week 3 of 4", available since week 3
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• Final Training: Week 3 of 3, named as "Week 4 of 4", available since week 4
• 
  

When the 7th week hit, Early Morning Training got disabled and people got confused as the first offered was Late Night Training: Week 1 of 3, named as "Week 2 of 4", along with progress resets.
When patch 12.0.5 released the names were changed and got presented as:

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• Late Night Training: Week 1 of 3, named as "Week 1 of 3"
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• Midnight Training: Week 2 of 3, named as "Week 2 of 3"
• 
  
• Final Training: Week 3 of 3, named as "Week 3 of 3"
• 
  

I think that the names of the quests ("Early Morning", "Late Night", "Midnight", and "Final") seem to indicate the progress through the season and I believe we could expect Late Night Training: Week 1 of 3 to be disabled by the 13th week and Midnight Training: Week 2 of 3 on the 18th.
Blizzard should have been more clear into communicating how these quests work, because so far this is just a theory and have not seen any clear information, neither in game, nor outside.