Hi
Would someone be able to help me please?
i have a trigger which inserts child records when a field is populated, it works fine but have 2 issues 

1. The Month field (crd.name) is starting from 0 ideally would like it to start from 1
2. I want to add a month to each record (crd.mrr date__c) 

Idea is it would create 10 records if Opp.Contract_period_months__c) = 10

Here is my code

Trigger CreatingAutoRecords on Opportunity (After Insert, After Update)
{
    
    List<MRR__c> MRRRecordsFinalListToInsert = New List<MRR__c>();
    
    If(Trigger.IsInsert || Trigger.IsUpdate)
    {
        For(Opportunity opp : Trigger.New)
        {
            If(Opportunity.Contract_Period_Months__c != null)
            {
                List<MRR__c> fetchingAlreadyExixtsedRecords = [Select Id FROM MRR__c WHERE Opportunity__c =:opp.Id];
                
                If(fetchingAlreadyExixtsedRecords.IsEmpty())
                {
                    // We are only creating a records when there is no MRR__c records exixts.
                    For(Integer I = 0; I < opp.Contract_Period_Months__c;I++)
                    
                        {
                        MRR__c crd = New MRR__c();
                        
                        crd.Opportunity__c = opp.Id;
                        crd.Name       = 'Month' + I;
                        crd.MRR_Amount__c = opp.MRR_Amount__c;
                        crd.MRR_Date__c = opp.Contract_Start_Date__c ;
                        
                        MRRRecordsFinalListToInsert.add(crd);
                    }
                }
                
            }
            
            try{
                If(!MRRRecordsFinalListToInsert.IsEmpty()){
                    insert MRRRecordsFinalListToInsert;
                }
            }
            Catch(Exception e){
                System.debug('The thrown exception for CreatingAutoRecords is:: ' + e.getMessage());
            }
        }
    }
    
    
}

Any help would be highly appreciated