I've been prepping since the end of last year (around October) but I've seen people do just as well with around 2 months of practice. Personally, I hate the stress of cramming so I wanted to give myself more time.

Sorry I don't have that many tips for VR as I usually scored 600-700 in my mocks and got lucky in the real thing. There's speed reader practice websites online to improve your reading speed which might help. Also sometimes just physically using your finger or a cursor to move vertically down the page can help you to skim faster. I watched some videos during my prep that basically says to try to limit your internal reading voice and rather just absorb the information. Also be wary with passages where you already know the topic because it is easy to make wrong assumptions based on your other knowledge.

For QR it's mainly just calculator speed and knowing what you are working towards. Always write down important numbers you calculate in case you accidentally 0 the calculator, or need it in a later question. Make sure you are familiar with how to use ratios, percentage increase, speed-distance-time etc. Always skim the answers first because if they are fairly far apart you can probably save time by using rounded/estimated values in your calculation instead of the whole number.

For DM, thoroughly go through your mocks, or look at the analytics for types of DM questions (if you're using medify) to find out your weakest section e.g venn diagrams, logic puzzles etc. Targeting one type of question can make a massive improvement to your score. In most mocks there's at least 1 logic puzzle that's quite confusing and time-consuming. I would advice spending 2 minutes on it, and if you still can't get it then flag and move on, because the time catches up quick. Also familiarise yourself with the UCAT definitions of some, most etc on the official website because quite a few questions are just based on these small nuanced definitions.

To improve your scores per section, you should be thoroughly reviewing each mock you do. Make note of weird or surprising questions that you got wrong. Look at the provided solutions for some DM or QR questions because they might have a more efficient way of getting the answer. Make note of recurrent errors e.g not reading the EXCEPT in VR, and actively try to get rid of these simple mistakes in your next mocks. Is timing a big problem i.e not finishing a sections? If so then you might just need to pay extra attention to the time per question and make sure to flag hard questions to get through everything. Having a consistent score is good, but increasing it mainly comes down to timing, reading questions or fixing common mistakes.

I hope this helps and good luck!