"Preparing food, eating and drinking, managing therapies, washing and bathing, managing toilet needs, dressing and undressing, communicating verbally, reading, engaging with others, and making budgeting decisions."
You need to be unable to do multiple of those things without a carer (or specialised aids, if possible) to be able to get PIP. You also need to have been this unwell for 9 months, or the condition is expected to last 9 months or longer by a specialist.
If someone can't do multiple of those things without a carer, and it's lasted months, their mental health condition isn't mild.
Media has done a right number on people getting them thinking that anyone with any sort of mild health condition is able to get PIP. Your condition needs to be severe enough that you need carers to live a normal life, it's not going to be mild.