He's not improving his PB by 5 seconds at a time
In 2013 in Marrakech he already had a 3:33, in 2014 he ran some races in MAR/FRA/ESP/BEL (including 3:34 and 3:33), in 2015 only one 800m (1:47) and one 1500m (3:33), both in Belgium, and last year he ran these few races:
We already have a calendar of World Championships, that's not really a problem: http://results.totallympics.com/forum.php?mod=redirect&goto=findpost&ptid=916&pid=11430&fromuid=1
The problem is to start setting up all the posts of the single nations medals