I would seal the ends with Anchor seal and if it is only 4 months old, I would do nothing until about 2 years old, except store it inside the shop. I don't precut into blocks until the drying process is well along, green wood when cut into blocks will have to be put on a jointer over and over, so leave extra wood to deal with. I spray all my wood with Bora -Care. lots of ways to work wood and this is my go to way for me.