Spread depreciation over remaining life

We are using computation method P for certain assets and are depreciating July month. We follow calender year. When we try to run the depreciation for the remaning months until December we get a different result in the month of December. It appears that the depreciation in the month of December which is also the last month of the remaning life of the asset is spiked heavily because the system is trying to catch up the remaining balance in the month of December. Is it possible to evenly spread the depreciation over the remaining Life Months of the assets instead