Connect to host after window open

Hi,

I have a problem with an RDP session i use daily, i have a host to open undocked on my second screen.
The problem is though that screen is vertical and it will connect the session before it opens the window meaning the session resolution is horizontal but window is vertical.

I found the display setting for screen sizing and set it to smart reconnect and that did what i had to do manually for it to get corrent session screen. There is a problem with this now though windows has sometime ago after some update started to complain on reconnect saying a session is already active meaning i haft to close and reopen. This happens random but often regardless of how long i wait after the sessions is connected to reconnect.

Is there some way to delay session connect until after the window is opened that way the session screen would be correct at launch?