Last minute A-Level maths studies... help?

When I finished my GCSE's last year, I didn't want to go onto college or sixth form but of course I had to stay in education until I was 18.

I've been working 4 days a week and then doing an A-level from home on my day off.

Here's the thing - I haven't really been doing much of the learning, my first exam is in a month and I'm incredibly behind with my work. I can just never find the motivation to do it!

Does anyone have any tips on learning a level maths? What do you think the most important things are to focus on when revising/learning? I'm taking core 1, core 2 and stats 1 from AQA if this helps.