Confide in your Father, tell him your mother is Narc. Tell him you are not fed if you are the only one in the house, tell him that after getting the boys up for work she goes back to bed and does not get up to get your breakfast. Tell him there is never anything for breakfast and nothing to make a packed lunch with and no money for a school dinner. He has no idea what is going on when he is not at home.
You are struggling socially as you have Aspergers. You are not good at sport because you have dyspraxia. Your handwriting and reading is awful as you have dyslexia. Get yourself assessed in the support department pronto, it will make life so much easier for yourself.
Organise yourself for school, start to pack your school bag the night before and do your homework the night you get it. Revise for exams if you can. Carry on with the aerobics, it helps your co-ordination.
This is the big one and you won't believe it, but, at the end of this school year, you will get an A in PE in your report, going from a U to an A in a year, that is due to your new found love of fitness. You win the sports award for Female Best Performance In PE. You become the fitness prefect as well, along with the Male Best Performance. This leads me to the next bit.....
Don't go there, don't share a prefect office with him and certainly don't snog "him". It will only lead to a 9 month relationship and years of heartache afterwards. Friend zone him asap. Be the one that got away.