Give this a try. It seems to have fixed my problem. On Intel's website, there is a driver download tool that does a scan of your system and automatically does driver updates. One of those updates was to update the firmware and card that I believe is the culprit. I did this about a week ago and the updates seem to have corrected any issues. ie, I don't open my surface from sleep and then have to manually reconnect and no signal drops since either.
https://www.intel.com/content/www/us/en/support/intel-driver-support-assistant.html
I had a number of updates that Microsoft has yet to push out.