4 siblings on the sprectrum help!

Just looking for someone to talk to that understands! I have a half brother with ADHD, a brother with autism, a sister with undiagnosed PDA sydrome and a sister wiht early signs with autism. I'm only 17, me and my family dont get much support for it, the system is relutant to give us support, I help to care for them at home as well as studying at college and working.