Long Term Care deductions

My husband is moving into a residential Memory Care facility.  He has Alzheimer's disease and is not capable of taking care of himself, or manage finances etc etc.  We will be paying for the facility with distributions from his Tradtional IRA.  The cost of his care will require more than doubling his IRA distributions and our income will go up to more than double our AGI from 2022.  What is the maximum we will be able to deduct on our income tax return.  I'm trying to figure out how much tax withholding (if any) we should request from the IRA distributions so we don't have a huge tax bill. We live in WA state, file jointly and for the last several years have used the standard deduction--haven't had enough to itemize.