Yes, this would work. However, a deductible $6,000 traditional IRA contribution for your spouse alone would be sufficient to get you below the $68,000 AGI threshold to receive 10% credit, so there would be no need to recharacterize your Roth IRA contribution. Only if your spouse did not make a $6,000 deductible traditional IRA contribution would you need to recharacterize your $6,000 Roth IRA contribution to be a traditional IRA contribution to get below the $68,000 AGI threshold. By your spouse contributing and you not recharacterizing and converting, your 2023 AGI won't be increased by the amount of that Roth conversion, increasing your chances of qualifying for this credit again in 2023.
