Just keep running! I would make sure you're practising on treadmills as well as roads and I found in the end the best way to get my timing down was to perfect breathing techniques. It's finding the balance of not thinking about it too much but also making sure it's working for you! There are plenty of tips on this site, but it's more or less practice makes perfect and getting to know your body and it's capabilities!
i passed my medical the Saturday (24th) just gone, this morning Thursday 29th i received the paper work for my fitness, so i just had to call the fitness center where i will be doing my fitness test and booked in for my test. i booked in for November 17th but i could have booked it for sooner, however i decided to give myself an extra couple weeks to just smash out some more fitness before the test.
after receiving your letter saying you have passed your medical and need to book a physical test, You HAVE to book and take the test within 28 days.