Same, I moved sixth form mostly because my old school was too far and when I talk to my old friends I do feel sad because I miss everyone and I miss having people around me that get me and I genuinely have fun with, but I just keep thinking its 2 years and I have to remind myself that I am only remembering the good stuff and not the reasons why I left, you should probably do the same. Just focus on the end goal and you're not alone, Im going through the same thing. Feel free to PM me xx