How to create subfield keyword for Aggregation in ElasticSearch

I am trying to get Aggregation results from ElasticSearch index

For exmaple , values in my index

"_source": {
"ctry": "abc", 
"totalentry": 1,
"entrydate": "2022-01-06"
},
"_source": {
"ctry": "abc", 
"totalentry": 3,
"entrydate": "2022-01-07"
},
"_source": {
"ctry": "xyz", 
"totalentry": 1,
"entrydate": "2022-01-08"
}

expected Results should be get totalentry based on country

ctry : abc
totalentry : 4
ctry : xyz
totalentry : 1

My Aggreagtion query

  QueryBuilder querybuilder = QueryBuilders.boolQuery().must(QueryBuilders.rangeQuery("entrydate")
                .gte("2022-01-01").lte ("2022-01-31"));      
      TermsAggregationBuilder groupBy = AggregationBuilders.terms("ctry").field("ctry");
      SearchQuery searchQuery = new NativeSearchQueryBuilder()
                        .withQuery(querybuilder).addAggregation(groupBy)
                        .build();
       List<Sample> records = elasticsearchRestTemplate.queryForList(searchQuery, Sample.class);

Above aggregation query returning 3 records instead of 2 aggregated results. My index properties

"ctry": {
"type": "keyword"

How to change it to below , so that i hope i will get correct aggregation results

ctry": {
"type": "text",
"fields": {
"keyword": {
"ignore_above": 256,
"type": "keyword"
}
}
}

My java code

@Document(indexName="sample", createIndex=true, shards = 4)
public class Sample { 

     @Field(type = FieldType.Keyword)
     private String ctry;