So if I understand correctly:
♣ You boot up and have internet for ~10 minutes
♦ Then internet connection drops for ~2 minutes
♥ Then the connection comes back of its own accord, without you doing anything
That's a new one on me, hopefully one of our experts will have some ideas.
Are you on Windows 10/11 or…?
In Task Manager, on Performance tab, click on Wi-Fi;
Note the graph activity while you have a connection;
Then see what shows when the connection drops.
Only thing I can think of is there's a 'Connect automatically' box which needs to be ticked on my connection—check that.