Since your parents sound more like they are trying to be authoritarian than supportive, the first thing I want to ask is if you have someone in your life who can be an accountability buddy. Are you dating? Or do you have a supportive sibling/cousin/friend?

Sometimes when you have to do something difficult, like make a hard phone call, telling someone else you need to do it by 3PM and have them check in on you to make sure you did it helps motivate you to do it. They could also be the helpful/friendly person who actually sits with you, literally holds your hand, or comforts you as you do an unpleasant task.

Others have made some excellent points here, including making lists, and organizing for your own comfort and well-being. I want to add one other. You should not make these changes out of fear of your parents but for yourself. No matter what happens in April, YOU will be better if you've taken care of a few of these. Do it for YOU.

And frankly, living away from parents who treat you like this might be a blessing. Look at the silver lining; either way you are winning. I'm cheering for you.

Edit: Would love to know why this is getting downvoted.