Unfortunately, the connection is initiated from the router's side and RMS cannot send any information to the router until it is connected.
To prevent long reconnect interval, I would like to suggest keeping Connection type option enabled every time in the RMS page inside router WebUI. More about connection types:
Enabled - RMS functionality is always on. Retrying connection every 2-5 minutes if disconnected from the server. 14 days after the device has disconnected, the router will go to Standby mode.
Standby - Router tries to establish a connection with the server infrequently - 6hrs between attempts. This is being done to save mobile data. In order to start using RMS. user intervention is not necessary from the router's side. Worst case scenario - RMS connection will be established 6hrs after adding it to RMS.
Disabled - RMS functionality is completely disabled. In order to start using RMS later, the user must enable functionality on the router's side.