Make Nexus stop switching WLAN automatically (same SSID, different BSSID) topic

Hi guys,
at work there is a WLAN build with several hotspots at different locations.
When my phone just lays on my desk it constntly loses the connection.
This is because i'm sitting almost in the middle between two hotspots.

The WLANs have the same SSID but every hotspot has a different BSSID

So i guess the nexus thinks "oh nice, same SSID but 5% stronger so lets switch to that network".
The issue here is, i have to login again after every network switch.

So i would like to know how to tell my nexus it shall not switch networks automatically.

Thanks a lot for your advice.