Hi there,
the Grid Block you used to create that layout, select that, and set its Vertical Alignment to default this will force the columns to be the same height, which we require to make the contents sticky.
If you need to adjust the vertical alignment then you can do it that in each of the columns Container Blocks.
Once you done that give the Grid Block an Advanced > Additional CSS Class of: has-sticky-column
And select the Container Block you want to be sticky and give a CSS Class of: is-sticky-column
Let me know once thats done and ill provide some CSS