You've got just enough time to revise confidently so long as you focus and revise a fair bit each week.
The QR section is mostly reading from charts/tables, putting it into context and working out simple calculations like percentage increases or the mean. My advice is to estimate as many questions as possible (if there's a pie chart and the piece you are judging on is about a 3rd and the options are 12%, 20%, 34%, 45%, 60%, then choose 34% as it's obviously the closest and don't bother working anything out), this means you have more time for other questions.
For the AR section, note all the common patterns and features (curved/non-curved, number of shape sides and angles come up a lot) and memorise these. Judge using your initial reaction, if the shading draws your eye, find out what about the shading is significant. If you can't find the pattern after about 30 secs then guess the answers for that set (there is often one obvious neither item to sort which you can put neither).
I would recommend the free Kaplan test and try to see if there is a copy of the 600 UKCAT questions book at your school/college/library for free resources. I am going to take my test on Tuesday so I'll give you some after-test advice after then if you want.
For VR, don't read the whole passage. Read the question/statements, identify the main topic/theme they are asking for and scan the text for the themes/topics.
Hope these tips help!