Move space between partitions on same drive (Ext4->LVM->DM-LUKS)?

I have a Gentoo box with LVM over a DM-Crypt LUKS drive. The problem is my / partition is only 50Gb and filling up too fast where I have to clear things out so as not to be 100% full. My /home partition is 500Gb. I found the size using lvdisplay. These partitions are on the same SSD formatted as ext4.

I would like to know if I can move about 100Gb from /home to / using LVM? If so, maybe a reference on how to do so?