Practice copying down sentences using words you know. I used to copy poems and it helped a little, but only when it came to writing poetry! You could also find a märchen and copy sentences from that. Sticky notes are my friends! I would put the German word for something (ie: the desk, the lamp, ect) and see those daily. It helped me with der, die, das. Grade wise, I can only encourage you to study and practice writing, reading, and speaking daily. I wish you all the best! Viel Glück!
