Hi nverjvlev!
I am a Ravensbourne Student also applied for the art foundation diploma here a few years back.You sound like a very capable person, and you would like to pursue the creative pathway as you mentioned submitted AS work for your art foundation.
During my time of applying for an art foundation I was still unclear about where I wanted to go and if the creative route was for me. Completing A levels was a form of security for myself in case I wanted to go down a different route, for example if I wanted to study medicine after they would require full A levels, so I could always still change my mind even after the course.
From what I have read I understand you are contemplating on whether to drop A2 and focus on your art. It may be worth looking into what is known as a pre-foundation diploma which some universities do offer. This is a short 1-year course which is for students who finished their AS and GCSEs. Can check out the link below.
Click to ViewSimilar to a foundation course this is a nice substitute for students to build on their portfolio and gain the skills and requirements needed to progress into the foundation course. Then moving forward from that, the art foundation course is to ease yourself into university degree later.
As Doodle_333 mentioned, It would also benefit you to contact the universities and check their requirements if you are unsure as most art universities consider the quality of your portfolio as well as grades.
As you seem very enthusiastic on the art path, the pre-foundation diploma is only a suggestion as some do not enjoy the fast-paced nature of A-levels. It is a difficult decision to make, but at the end of the day whether you choose to push forward with your A2, or drop them or take a completely different route, make sure you always look ahead to what you may need later, do not worry about the negative feelings your teacher gives off. Think positive and move forward at your own pace.
Whatever you choose to do, I believe health is always the top priority, mentally and physically, so just consider what will be better for you in the long run.
Hope this has helped!
Jay