Welcome to the forum. This sounds so tough. Living along side of someone who is experiencing all these symptoms can be incredibly difficult. It is positive to hear that your partner has a referral to a psychiatrist and is hopefully getting the help he needs. Having some space may be really difficult for you during this time and I can image you would be very worried. I wonder, besides reaching out on the forum, are you getting any support for yourself? Sometimes when we are along side another person in their illness, we get quite frustrated as we can't make them do things. People experience healing and recovery at their own pace. Sometimes it takes along time to accept help. What I generally encourage people to do, is build up your own strength and capacity. It is so important that you remain strong for you and all the challenges that may be ahead.
A good first step would be to visit a GP and explain your current situation and see if there is some support available locally. Using the forum is also a great way to gain support and I encourage you to continue to use the forum to vent, to read about others experiences. Sometimes it helps to know that you are not alone. I have attached a link for you to review on the importance of taking care of you. https://www.beyondblue.org.au/the-facts/supporting-someone/looking-after-yourself
We are here and we are listening.
Wishing you the best possible outcome,