How to change field label using code when fields are fetched through fieldset. (Optimised Approach)

Please Note: This is not a complete code. I am showing here only the concept. To understand the concept, you must have prior knowledge of fieldset. Please write your comment or mail me at sandeep.saini482@gmail.com if you want elaboration of full code.

 
public Map mapFieldLabels{get;set;}

//call this method in constructor
public methodTosetLabel() {
     mapFieldLabels = new Map();
     Schema.DescribeSObjectResult d = Contact.sObjectType.getDescribe();
     Map mapFields = d.fields.getMap();
            
     for (Schema.FieldsetMember member : getEnrollmentQuestionsFields()) {
         if (member.fieldpath == 'Student_Type__c') {
             mapFieldLabels.put(member.fieldpath,'I am a'); 
         } else if (member.fieldpath == 'Program_of_Interest__c') {
             mapFieldLabels.put(member.fieldpath,'What is your program of interest?'); 
         } else {
             mapFieldLabels.put(member.fieldpath,mapFields.get(member.fieldpath).getDescribe().getlabel()); 
         }
     }
}

public List getEnrollmentQuestionsFields(){
   //EnrollmentQuestions is the fieldset
   return Schema.SObjectType.Contact.fieldSets.EnrollmentQuestions.getFields();
}  

Now assign map value to label as shown in below code.