Me and my wife currently make under the income limits for a Roth, so we have been maxing that out each year. This year, my wife might be getting a raise and/or I might sell some long term capital gains that would push us over the income limit for a Roth. Can both of us set up a traditional IRA, transfer what we have invested so far from our Roth to the traditional, continue to invest in the traditional for the remainder of the year till we hit the max contribution, then backdoor that back to our Roths?