How to find out Lora ongoing reception?

Hi,

My preamble (+sync word) is small, which means my packet is long in comparison. I am duty cycling the receiver by being in sleep most of the time and enabling RX for only short time. I want to optimise by going to sleep if no preamble+sync word has been detected.

Is there any way to detect the ongoing reception before packet has been fully received but preamble+sync word has been matched by Lora receiver?

Thanks in advance
WonderfulIOT

There are a couple of ways of doing that, check out the manual;