Honestly, I'm torn between dropping FP3 or soldiering on. On one hand, dropping it will give me precious extra time which I can use on mastering the other modules, but on the other hand, I want to learn FP3 as soon as possible and have the optimistic belief that I can pull it off.
My current learning style is to first study and understand the maths involved, and then to do the exercises on any area I feel needs working on. Afterwards, I review the material every now and then, and do more exercises on anything that I feel rusty at. I feel this approach gives me both breadth and depth at a reasonably fast pace.
As for a tutor, it's not really an option for me. I don't have much in the way of income, and any tutors will quickly burn through my savings. Rather than that, the internet has served me quite well thus far. When I started learning maths for A Levels, I had to relearn everything from scratch as I hadn't touched any maths for over 8 years (I didn't even remember how to work with fractions!). Despite that, the abundance of free resources on the internet has allowed me to quickly go from knowing only arithmetic and basic algebra to being able to actually understand and do FP2 material. It hasn't been easy, I'll admit. Calculus, in particular, has been extremely frustrating to try and understand at a deep level for various reasons.
However, despite my praise for internet resources, I will have to concede that there are far fewer resources for Further Maths than there are for Maths. Regardless, I reckon there should be enough to be able to learn FP3. The only question is how well the resources for FP3 lend themselves to being able to learn fast...