Wife and I are married and file jointly. Our home loan under her name only but both are on the deed. if she stops working, can I claim the deduction for both of us?

My wife and I bought a home in California and the loan is only under her name, but the deed is under both our names. If she goes part time and doesn't make nearly enough to deduct the full interest and taxes on the mortgage, would i be able to use the income tax I paid to make sure we deduct the full amount?  We always file married jointly.