Study new vocabulary and grammar before attempting the written homework. Re-read an old reading passage to get you thinking Latin before attempting the homework. Read a new passage for content first, guessing at words that you don't know, looking for key words to help you unravel the meaning of the paragraph. Better to read through the passage several times rather than just once. It's normal for language students not to master new grammar or vocabulary on the first try.
Language learning is a cumulative process.
Don't study for several hours in a row without a break. You'll go nuts, and it will be less likely to become part of your long-term memory. Don't be a passive learner. If you use all your senses, if you use the language to create new sentences, you will learn it better. Don't study vocab for more than 15 minutes at a time, preferably no more than 10 minutes at a time.