There will be universities you can target, albeit a slightly more limited number which you can expect to shrink again after UCAT is taken into account.
Best thing is to focus on developing good study habits now and for A level. If you can’t grow those habits now, you may find that medicine remains inaccessible, even if you were to manage to get in.
Medicine isn’t just going to be a matter of clearing all the hurdles. It’s not going to suddenly become easy once you get in. It will require sustained effort. There is a reason that some universities do expect consistency in academic performance as it is often a good predictor of how well you’ll continue to do and indicates a person’s ability to sustain their efforts over time. Just something to bear in mind. You may prefer a course that’s a little less relentless or is perhaps more practical in its academic leaning. You’ve got a lifetime of learning to get on board with if you go for medicine, and the exams never really stop in the first few years. There are many courses related to medicine that may suit you better. Medicine doesn’t have to be the be all and end all.