What matters is not to rush into anything you may regret later. Grief is not a period to make life changing decisions.
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You should both have living will and "Health Care power of attorney" for your spouse
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Both are excellent ideas that everyone should have in place.
Our lawyer told us both that the one remaining should NOT make any big changes legally for ONE YEAR afterwards because you will be almost brain dead from grief. You absolutely WILL make some terrible decisions that will not be good for you.
When one of my sisters was widowed, she suddenly was mad to sell her nice house and go live near a brother in NM. Another sister and I made her go visit brother and she returned almost in shock. It was a desert, which most of us hated after being raised in WV and the rest of them in Ohio. She took a few years before selling out...