The two week timer is based on the number of blocks mined. Fail to mine blocks and it is much longer. 2% of hashrate means 50x as long to get to your first difficulty adjustment. Close to 2 years and basically 0 chance of adjusting in 2 weeks unless they change the rules.
Bonus note, hash rate can only adjust 50% in a single period. That means another year to their second adjustment not straight to 10 minute blocks after 2 years. Then 6 months, then 3 months, then 1.5 months.
Follow it out and you are looking at about 4 years to get back to 10 minute blocks at their current signaled hash rate, assuming all of that hash is willing to stick it out losing money all that time.