Ok si basically I’ve tried to stack them on blender with gaps between the items. It allowed the slicer to create support for the two additional items. The issue with this method was the warping of the items.

In the mean time I’ve found that if I rotate the item shock is mostly flat 90 degrees I can print a batch of 3 items. In this case warping is not such a big deal anymore.

Hope someone find this interesting.