Creating multiple function onEdit(e) to work in one script - google-apps-script

Question

My script below works as an independent script - It will add a date and a time in a cell/column opposite the trigger cell/ column. I.e. Any cell in Column A stating TRUE will have in its adjacent Column B cell stating the exact date & time, at any moment the cell in Column A is deemed to be TRUE. The script keeps this as as one single change. If I were to delete TRUE or change it to any other text, the data in column B would remain the same, until I write TRUE again - This will force the cell(s) in Column B to overwrite the previous date/time with the latest date/time the moment the new "TRUE" statement was issued in Column A.
Now, I would like to add another onEdit function where it works on Sheet 2, but the column reference numbers are not 1 (as you will see below, all numbers are 1, whether positive or negative), but will be 2. I do not know how to get the two separate functions to work as when I list them separately, with an identical script structure, only the last script in the sequence works, and the first one does not.
I hope I have made this clear enough; I am not a coder by any means, and I have done my best with tutorials, forums, etc before posting this question. I can learn better by reverse-engineering someone else's work rather than being given the building blocks and told to create something, but I appreciate any education on this so I can learn for the future.
function onEdit(e) {
var aCell = e.source.getActiveCell(), col = aCell.getColumn();
if(col == 1) { //number of column(s) where you have a data
var adjacentCell = aCell.offset(-1,-1);
var newDate = Utilities.formatDate(new Date(),
"GMT+1", "dd/MM/yyyy hh:mm:ss");
adjacentCell.setValue(newDate);
}}
function onEdit(e){
var ss = SpreadsheetApp.getActiveSheet();
//change to be your sheet name so the script only triggers on that sheet
if( ss.getName() == "Sheet1" ) { //checks that we're on the correct sheet
var r = ss.getActiveCell();
if(e.value != "TRUE") return;
e.source.getActiveSheet().getRange(e.range.rowStart,e.range.columnStart+1).setValue(new
Date());
}
}

Answer 1

I don't think that you have specified sufficient conditions for this to work correctly but this is what you have so far:
function onEdit(e) {
const sh = e.range.getSheet();
if(sh.getName() == 'Sheet1' && e.range.columnStart == 1) {
e.range.offset(-1,-1).setValue(Utilities.formatDate(new Date(),"GMT+1", "dd/MM/yyyy hh:mm:ss"));
}
if(sh.getName() == 'Sheet1' && e.value == "TRUE") {
e.range.offset(0,1).setValue(new Date())
}
}
I imagine you will need further debugging to get this to work.