On the basis that remaining games cannot be completed then how about
Top 12 into play offs Top four get first round bye Next 8 play each other in one off game at home of teams in current positions 5 to 8 Four winners play away to top four in one off game The then four winners play one off semi final at home of who is current highest position in league Two winners get promoted
At the bottom the bottom 12 do something similar but losers go through till you end up with four relegation places or two relegation places if league below is null and void and invite South Shields and someone from national south to join national league