How Do We Go About Handling My Brother's Affairs While He Is Involuntarily Committed? [north Carolina]

Location: North Carolina, USA

For the sake of brevity, my brother is experiencing paranoid hallucinations and delusions. He is starting to become a danger to himself and potentially others. He has been involuntarily committed in the past, but it was 10 years ago, and he was functionally broke/homeless back then.

It has become clear to us that it is no longer safe or compassionate to allow him to continue on like this untreated. He will need to be committed for an extended period of time.

He is not married and has no children. His only surviving relatives are myself (his half brother), my sister (his full-blooded sister), and our mother (his biological mother).

He is currently renting a house where he stores items from a business he owns. It's mostly clothing, but it could be around $50K worth of inventory. He has money in a bank account. He also has a car he is financing. To our knowledge, he doesn't own much else or have money in retirement.

Our legal question comes by way of this. How do we ensure his affairs are properly handled so that when he is released, he is not completely broke again? We want him to get proper treatment. We don't want him to lose everything he has.

When he is committed, we need to know how to do things like get access to his house, contact the landlord to terminate the lease, move his inventory to storage, and sell or continue to pay his car loan, among others. We don't want him to lose all of his inventory or suffer a repossession of his vehicle while he is hospitalized.

How do we best go about this?