French A-Level

I recently took my French GCSE a couple of years early. I passed with a high grade and want to do A-Level but I'm much to young to go to any sixth form and I'm also homeschooled. I can't go to a college during the day due to my parents jobs and other GCSEs, is there an online course or something I can do? I don't even know where to start with this stuff.
I'd be grateful for any advice