Locate the image of the point P as seen by the eye in the figure.

The presence of aire medium in between the sheets does not affect the shift

The shift will be due to 3 sheets of different refractive index other than air.

$=\left[1-\frac{1}{1.2}\right]\left(0.2\right)+\left[1-\frac{1}{1.3}\right]\left(0.3\right)+\left[1-\frac{1}{1.4}\right]\left(0.4\right)$

= 0.2 cm above point D