New index not forminga nd ending up with High disk watermark

When I run ES, Kibana, Filebeats my logs are getting collected and passed in real time as I want, but they are all getting collected under an old index-

yellow open   filebeat-7.4.0-2019.11.08-000001 lMcCHhWuT9ecTfsI4OyGEA   1   1    9076656

Please help me fix why I cant generate new index per day as this old index has too many doc counts and resulting in High Disk watermark.