You simply base on an 'if the season ended now' approach and list the team currently in 1st place in the conference as their bye and if it changes you adjust accordingly.
The committee knows the tie breaker rules for the conferences: Conf W/L, overall record, AP ranking, head to head results, common opponents, etc..
No guess work needed, assign byes based on current conference leader then seed the other 8 as you would right now with what has occurred good/bad up to this point.
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