We are taking elasticsearch backup using SLM policy which takes backup on hourly basis. With this we have retention period setup for 45 days. Now in a day it takes 24 backup which multiplies by number of days(45) for retention.

To further optimize this what we are looking at is, is there a way to keep only the latest backup for that day and delete rest of them. e.g : out of 24 backup for the day delete 23 and keep the last one.

Looking if this is possible in SLM or is there a way to achieve it.