I believe here are my options to correct this.
Top of stairs transition to carpet.
Or you can have laminate on the stairs and need to finish the carpet up to the top stair of laminate.
On the top several steps and adding progressively thicker layers of masonite 1 8 on the fourth one down 1 4 on the third etc.
3 use some sort of transition piece between the stair tread to carpet when new carpet is installed.
You may have carpet on the stairs and need to install the laminate up to the top stair where the carpet ends.
Installing laminate on top stair to carpet can work both ways.
Most often the top stair will involve installing a stair nose.
The tacks should be facing toward the back of the landing tread.
You d be gradually increasing the height of several treads and the transition at the top of the stairs would be less abrupt.
Find ideas and inspiration for carpet stairs wood floor transition to add to your own home.
Simple to do cheap complies with code assuming the existing stairs.
If you do not have a new tack strip you can use a track strip you removed after pulling up the carpet from your staircase.
2 bevel cut the back edge of the stair tread to minimize the height difference.
New carpet will be installed so some sort of transition piece can be used if possible.
1 cut the sub flooring in that small area and replace it so the transition between the carpet and stair tread is level and acceptable.