I have an add-on question related to yours that I'm hoping someone will answer as well.
I had my husband create his own Wikitree account a week ago (because of DNA testing), and learned he could not use the same email account that we share, or he wouldn't be treated as a separate account. I had him create a free email account, and sign up as a member of Wikitree using that email account.
In your case, I THINK that once your husband sets up his own email account, and then creates Wikitree account based on that email account, you can transfer his profile over for him to "manage". You are (technically) not allowed to manage any other living person's account (without jumping through a hoop), due to the European regulations that are about to go into effect.
He has to join Wikitree himself, so he can freely add you to his "Trusted List" if he wants to. Then WIkitree will have explicit permission that is granted by him to to have his DNA results attached to his profile (which will probably have a privacy level set, but not as extreme as "Unlisted"). Then, if you are on his "Trusted List" you can carry on doing all the Wikitree work as before (if that's what you both want.)
But that leads to MY question. I thought my husband and I had accomplished all of that a week ago, but got an email today warning me that I manage the account of a living family member whose profile will become unlisted next week. That can only apply the the account I thought we fixed last week.
Now I'm worried that something went wrong. I'm not sure why I got that warning if all is well with his new account. The DNA test looks like it is now associated with his new account. It sure LOOKs like his own DNA test is associated with with his new Wikitree account, and has been for a week.
How can I tell if there's still a problem?