Ive been in this situation.... My other 4 siblings did shit all while I was at home because they got used to me being the peacekeeper and picking up the slack. They need to learn to grow up and take care of shit but sometimes it's just not something you can do yourself. My "parents" also enabled them and would just scream until shit was done if I tried to refuse to do something... So I didn't have much choice. Didn't help I was abused by everyone either emotionally or physically. Happy to not be there anymore.

I hope this isn't the case for you and if it isn't, maybe talk to your parents and explain what's going on. I'm all for equality but also practicality. Wish you the best of luck.

NTA