Zend certified PHP/Magento developer

High System Load Elasticsearch – Magento 2.4.3-p1

We are running Magento 2.4.3-p1 with Elasticsearch (ElasticSuite provided from the theme vendor)
Elasticsearch is using most of the system resources and making the website extremely slow.

curl -XGET ‘localhost:9200/_cluster/health?pretty’

{
“cluster_name” : “my-cluster”,
“status” : “yellow”,
“timed_out” : false,
“number_of_nodes” : 1,
“number_of_data_nodes” : 1,
“active_primary_shards” : 407,
“active_shards” : 407,
“relocating_shards” : 0,
“initializing_shards” : 0,
“unassigned_shards” : 1,
“delayed_unassigned_shards” : 0,
“number_of_pending_tasks” : 0,
“number_of_in_flight_fetch” : 0,
“task_max_waiting_in_queue_millis” : 0,
“active_shards_percent_as_number” : 99.75490196078431
}

Please suggest. Thanks