Depending on your school's schedule, things are coming down to the wire. Teachers are figuring out how to do testing. School grading policies might still be coming into focus. Eighth-grade students and seniors are facing an uncertain future transition. Parents are tired and hoping for the best.
That's all you can do. Your best, but gently. Make your plan. Have some online study groups. Finish those papers. Ask for the help you need. Then, for whatever tests are coming your way, trust your preparation and go with it.
Don't pull an all-nighter. You won't test as well. Don't give up completely. You've come this far. Make your best effort without going overboard. Your sustainable best.
I'm amazed by the work everyone I work with, young people and adults, has put in to adapt to working from home. Wishing you the best at the finish line.