The Magpies struggled for consistency at the back last season as more than 25 different defensive line-ups took to the field.
Sheridan, however, said the same wouldn't be happening this season, telling the Nottingham Post: "When I was looking at Notts County last season when I was managing at Newport, attacking wise they were one of the best teams we played.
"But they conceded goals too easily. The team was very unbalanced and it's important that your back four or back five are settled. The players have to know each other's strengths and weaknesses and if you are chopping and changing every week it's very difficult to get that."
Goalkeeper Adam Collin, Carl Dickinson, Richard Duffy and Matt Tootle have all arrived in recent weeks and they will reportedly be joined by a new left-sided centre-back in the coming weeks.
How will Notts County do defensively next season? Share your thoughts on the Pride of Nottingham forum.