Worse?

So, Im in high school and dealing with pretty bad SPD. I went to therapy for it when I was younger. But stopped about 3 years ago, and I think its getting worse. I used to be able to go to school and last the entire day. Now I have to put cotton in my ears to help with sounds, and the lights are to bright and flicker. Ive talked to teachers and there helping a bit, like I can sit in the back a bit away from others and the lights. but its still really really hard to concentrate. I think its gotten worse cause ive stopped eating normal, and I don't sleep much. my mom doesn't seem to notice or care. and any advice would be LOVED, anything to help me get threw the last of high school.