My 11 son and school life

My son was diagnosed last year with ASD , I had to fight to get a diagnosis ended up going private, it’s been a hard year as he has always known he is different. 
just recently hormones have kicked in and he has just started secondary school and he has found this so hard. This particular school was highly recommended due to their SENCO department, but I’m struggling to get them to help. 
it’s been so hard for both of us and I’m finding life really hard. 
Anyone have any ideas how I can make school life better for him??