Dan Burn is suspended for his late red card in the 2-0 victory over Stevenage on Saturday so Richard Hinds could step into the Glovers' defence.
Johnson senior has a number of other slight concerns for what is sure to be a memorable evening for their family.
"We won't know the team news until Tuesday," Johnson told Press Association Sport. "There are a couple with a few sniffles and knocks and we have to put out the best team that we possibly can to win the game."
Third-placed Yeovil, who have already secured a play-off place, head north knowing three points would leave them just two behind the automatic promotion places with two games remaining.
"If we are going to try to reach maximum points then we need to win our last three games and if we do get the 83 points then we are waiting for others to slip up," he added.
Striker Jordan Cook is still with Charlton receiving treatment for his injury and will once again miss out.
- Sports & Recreation
- Richard Hinds