Add a new row to a spreadsheet, copying down formulas when a certain cell reaches a particular value

I’ve got a simple Google Sheet (it’s literally one line), that has in A2 =now() to calculate the current time, and then a series of formulas calculating various dates/times based on the current date in column A2 all the way to column R (column 18)

What I’d like to do is for when cell J2 reaches the value of “8” is to insert a new row and copy down the formulas from A2 to R2 into the new row, which would run every month.

How do I script this? I have no scripting experience.

I’ve been scouring the posts around here and have managed to cobble together some script that works:

 function copyFormatAndFormulas(rangeSource, rangeDestination) {    rangeSource.copyTo(rangeDestination, {formatOnly: true});    var formulas = rangeSource.getFormulasR1C1();    for(var x in formulas) {      for(var y in formulas[x]) {        if(formulas[x][y] == "") continue;        rangeDestination.getCell(parseInt(x) + 1, parseInt(y) + 1).setFormulaR1C1(formulas[x][y]);}}}   function addRow() {       var ss = SpreadsheetApp.getActive();     var NameofSpreadsheet = ss.getName();   // if(NameofSpreadsheet == 'Email Triggers') { //checks that we're on the correct sheet, although can't seem to get it working      var WorkingDaysLeft = 8;      var sheet = ss.getSheetByName('Email Triggers'); // the current sheet       var range = sheet.getRange(2,10,1,1); // looking for cell J2      var data = range.getValue(); // getting the value of cell J2      if (data == WorkingDaysLeft) { //checking the value of cell J2 to WorkingDaysLeft, if it equals 8 then run the next functions to insert new row and copy down formulas         var sh = ss.getActiveSheet(),//            lRow = sh.getLastRow();         var lCol = sh.getLastColumn(),            range = sh.getRange(lRow,1,1,lCol);        sh.insertRowsAfter(lRow,1);        var newRange = sh.getRange(lRow+1,1,1,lCol);        copyFormatAndFormulas(range, newRange);      }} 

I’d like to have a conditional IF statement to ensure that I am on the correct spreadsheet, as there are other sheets in the workbook. Any ideas what I’m doing wrong here?