I had it earlier this year. I took all of May and the first two week so June off. In place of running, I broke out my road bike and put in two months of riding (May, June). The riding didn't bother my achilles too much.
I started back in mid June, and for the next 4 weeks put in the following weeks: 23, 23, 15, 25. I ran on the roads as central Ohio seems to have a dearth of dirt trails that aren't hilly.
I did go to PT for 3 weeks, but didn't continue to do any of the exercises afterwards.
On the plus side, I ended up PRing in 10k and the Half in October, which is surprising considering I maxed out at 48 miles for a week, and the average was actually 38 from mid July to first week of October.