Thanks for all the input.
Although I am still not exactly sure how "in last 24 months" is interpreted, I think I have solved the problem by planning to do at least 10 minutes with an instructor at a local hard runway tomorrow. (My last hour or more with an instructor was 25/3/15 but I also did 50 minutes on 26/10/15. I have almost 200 hours PIC in last 24 months).