If you and your spouse are the only members of the LLC and you live in a Community Property State (AZ, CA, ID, LA, NV, NM, TX, WA, & W)I - and you both participate materially in the business, then you can file using Schedule C and Schedule SE for your LLC. If you do not live in a community property state, then you must file a partnership return (Form 1065) or, if you elect S-Corp status, Form 1120-S.
Sine you were a multi-member LLC during 2021, you will have to file Form 1065 for 2021. Going forward, one spouse can gift his/her interest in the LLC to the other spouse. I would do so in writing as of 12/31/2021. The spouse that receives the gift will then file as single member LLC on Schedule C.
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