Conditionally formatting - Need to skip blank rows in conditions

Hello Excel Geniuses,


In the attached excel sheet, I need a conditional format with fill that has the following logic

If the column in a cell is greater than or less than by 2 from the previous cell - conditionally format
If there is blank in a previous cell, look for the nearest cell and check the difference to apply the conditional format

In the example, 5,2,6 should be format, 1 in row 16 should be format based on row 12 value of 9.

Thank you

Piku