Hey, yes of course I'm more than happy to give some advice. Apologies in advance for the length of this answer, will just try to include everything I can think of!
Firstly, the most important thing is to start practice early enough and do it consistently. As you might have seen me say above, I would recommend doing about 2 months of near daily practice to build up your skills as I found my performance really peaked at this point. In terms of how to practice, I used medify but you could also use medentry, and here is the rough schedule I followed:
Week 1 - Learn about the questions by using the medify video tutorials and some untimed practice
Week 2 - Practice untimed questions to build accuracy, making sure to review both correct and incorrect answers to learn the strategies
Week 3 - Start to build in some timed practice. Time management is probably the hardest part of the ucat, so it is important to recognise that you won't finish every question and instead practice just doing as many as you can in the time.
Week 4 - Do some single section mocks alongside your other practice, again to get used to the time pressures.
Weeks 5-7 - Start doing a full mock at the beginning of each session, and then use the rest of the session to work on the weakest section or question types. Do not worry if your first few mock scores are low, mine were too, and it does take time to see a major improvement as it's all about building that mental stamina.
Week 8 - Attempt the official UCAT mocks to give the most accurate representation of the real thing.
The other major piece of advice I have is about time management strategies. As I said before you shouldn't aim to finish every question, and instead use the timed practice to find a rough number of sets to aim to complete in each section and then adjust your timings accordingly. I liked to set 'milestones' of how many questions I wanted to complete by a certain time, and I was also very strict about sticking to the time limit I'd given myself for each question. I also used the 'guess, flag, and move on' technique whereby on the first pass through the section I would only complete the easier questions and guess and flag the harder ones, then come back to the flagged ones after. Some question types are more time-consuming than others, for example multi-step calculations in qr, patterns you just can't spot in ar, or negative questions in vr, so it makes sense to save those until last and get all the 'easy' marks first.
Finally, make sure you know how to use the keyboard shortcuts and calculator effectively as this really will save time. For the calculator specifically I would say to practice using the keyboard number pad to save time as well.
Overall I can't stress enough that the main thing to do is to practice each individual question type loads and find the techniques that work for you. I think I've covered the main stuff, but if you have any further questions or want any section specific advice don't hesitate to ask