Yep. You have.
If you think about it, -ad at the beginning of a word usually means to, or towards, or near: so, as adjacent means next to, jacent should mean really snuggled up - and most of wouldn't object to as an aim for the day.
Sadly, though, jacent simply means to lie down.
Still, you don't have to do it alone, do you?
Thing To Be Today: jacent. This word comes from the Latin jacēre, to lie. Hic jacent means here lie in Latin, which you sometimes see on old tombstones:
photo of tombstone in Bad Waldsee by 4028mdk09