I want to be recognised as a carer for my asd partner

Hi there, I have a child under 2yrs with my partner who has recently been diagnosed with autism. 

I offer him and my daughter at her stage in life a lot of support but I'm keen my employer recognises this and supports me where needed. 

Is this process/assessment only completed via the council? Any idea what level of care allows you to access this status? Kinda sceptical of get it because it's not like he needs a bath from me but he needs a lot of support with cognitive load which is hard to articulate!