Training for Windsor Dorney Half Marathon

[Deleted User]

5 months ago I started running a few times a week. I loved it.

I have a problem. I can't get myself into a routine. Sometimes I'll not run for a week and when I go out again I can REALLY feel it.

My solution was to sign up for a race. I work 12 hour shifts with a 4-on, 4-off shift pattern which leaves me with few weekends free (and sometimes getting home from work has me reaching for a hot water bottle and pyjamas instead of trainers!). I signed myself up for the afforementioned half marathon on the 16th March.

Using mapmyrun on my iPhone I have run 12.5 miles in 1h50m (about a month ago) and 10km in 45 minutes (2 weeks ago). As I mentioned before, I would not say that I have really done any training.

Could anyone PLEASE advise me on the sort of training I should be doing over the next (eeeeek!) 3 weeks in the lead up to the event. I was hoping to manage a 1:50 but with my sheer laziness of recent weeks I'm not sure I can manage it.

Thanks in advance for any replies!

P.S. Anyone else doing this race?