Of course not mate, I'm a Medical Student 2018 entry. Firstly the predicted grade you get from your mocks won't influence your offer chances as much as you'd think, if you got predicted say AAB/ABB, there's still a relatively good chance of you getting and offer, a lot of my mates have been predicted BBB-BBC and still manged to get AAA offers, but that depends on how competitive your course is in terms of offers to applications.
Its definitely a bit late for you to take notes on everything, summarize it, learn them, then apply it and practice. But I'd recommend you do past papers and lots of questions, maybe even the first few papers do open book and once you've done enough you'd have covered the course at the same time. I had a similar problem in Year 12, when I had AS exams and I started revision too late, but that's what I did and it worked tbf I did do a hell load of revision in the time I had left, I also watched videos and done a few mind maps on sub topics that connected. I ended up getting AAAAA at AS