That is going to be a struggle, and if you do manage it, I fear you may not get the best out of your training.
I have 3 easy exams to go, Have more than enough hours. Have no work or any other commitments. And I really doubt I will be done by then.
I am assuming you don't have an IMC, or you would have loads more chances to fly.
I would think about getting an IMC done, It will get rid of 15 hours, should not be affected by weather too much. Then it will allow you to fly most days. At the same time you will get a head start on the IR
I doubt it will cost you any more than £1000 extra, which ain't a lot, Won't even buy you 3 hours in a twin