Unemployed Student looking to Claim Benefits

Citizens Advice haven't replied yet, so hoping for some advice here.

I'm still technically a student, currently on intermission and set to return next year; on a break due to anxiety and depression related, approved to take time off by counsellors/Uni/etc.

I've been unemployed for close to three years now, currently living with my rents and not earning anything.

I understand students are typically exempt from benefits, but is there any particularly benefits I should apply for?

I do have a sick note from my doctor indicating not fit for work for the next two months.

Thanks!