our situation is that we bought a home with a $700,000 mortgage on October, 2018. The 2018 interest on the mortgage was $5,000 which we each paid 50% or $2,500. The TCJA limits deduction of interest to a loan of $375,000 which lowers the interest deduction to $2,700. Can we each claim the interest on $375,000 loan limit or just 50% of that amount ?