The terms lishmot and lintosh are crucial to verses Exodus 23:10,11.
The issue in these verses is taking care of the needy. There is no reference to any shabbat – interruption.
In Leviticus 25 it's all about the land, not the person, the gavrah, but the shabbat for the land.
Sadeh and kerem come before tizrah, etc.
Lakhem le'akhla recalls Genesis and the Garden in Eden.