Ah, yeah, I hear you!! And Mandarin is so complex too with tones/etc! I have enough trouble just vaguely remembering my university Japanese (I am nowhere near fluent and I wouldn't say I'm conversant either, but I can buy things and ask for directions and I mostly remember my hiragana okay ^^;;;) let alone throwing tones into the mix!

I shall wish you the best of luck with it! ♥