Angular reactive forms set and clear validators

Please assist, I want to remove all validators in form, Please advise whether it's possible or not and if not, what's the better way to remove validators if you have a form Group of 20 or more form controls, see example below.

 ngOnInit() {
    this.exampleFormGroup = this.formBuilder.group({
     surname: ['', [Validators.required, Validators.pattern('^[\\w\\s/-/(/)]{3,50}$')]],
     initials: ['', [Validators.required, Validators.maxLength(4)]]
     });
  }

 public removeValidators() {
    this.exampleFormGroup.get('surname').clearValidators();
    this.exampleFormGroup.get('initials').clearValidators();
    this.exampleFormGroup.updateValueAndValidity();
 }

 public addValidators() { 
  this.exampleFormGroup .get('surname').setValidators([Validators.required,Validators.pattern('^[\\w\\s/-/(/)]{3,50}$')]);
  this.exampleFormGroup.get('initials').setValidators([Validators.required, Validators.maxLength(4)]);
  this.exampleFormGroup.updateValueAndValidity(); 
 }

The above method addValidators() will add validators and removeValidators() will remove validators when executed. But the problem I have is, I have to specify the form control I'm trying to clear validators. Is there a way to just do this.exampleFormGroup.clearValidators(); and clear all in the form and again this.exampleFormGroup.setValidators() to set them back? I know I may be asking for a unicorn, but in a scenario where the formGroup has 20 or more controls, clearing and setting validators can be painful, so a map on how to handle such scenarios will be much appreciated.

You can do something like this:

validationType = {
    'surname': [Validators.required, Validators.pattern('^[\\w\\s/-/(/)]{3,50}$')],
    'initials': [Validators.required, Validators.maxLength(4)]
}

ngOnInit() {
    this.exampleFormGroup = this.formBuilder.group({
        surname: ['', [Validators.required, Validators.pattern('^[\\w\\s/-/(/)]{3,50}$')]],
        initials: ['', [Validators.required, Validators.maxLength(4)]]
    });
}

public removeValidators(form: FormGroup) {
    for (const key in form.controls) {
        form.get(key).clearValidators();
        form.get(key).updateValueAndValidity();
    }
}
     

public addValidators(form: FormGroup) {
    for (const key in form.controls) {
        form.get(key).setValidators(this.validationType[key]);
        form.get(key).updateValueAndValidity();
    }
}