I paraphrase this as, it may weaken before making landfall, but then it could stall, wobble, do a double take, and pull a Nari on you.

"THUS, SLIGHT WEAKENING
IS FORECAST PRIOR TO LANDFALL BETWEEN 72 AND 96 HOURS. THE TRACK
FORECAST BECOMES OF LOWER CONFIDENCE AFTER 72 HOURS, AS STEERING
CURRENTS WILL WEAKEN ONCE NEPARTAK IS STACKED BENEATH THE
UPPER-LEVEL LOW, MAROONED WELL TO THE SOUTH OF THE MID-LATITUDE
JET. NUMERICAL MODEL GUIDANCE SUGGESTS THAT A SLOW DRIFT ACROSS
HONSHU INTO THE SEA OF JAPAN IS CURRENTLY MOST LIKELY, AND THE JTWC
FORECAST FOLLOWS SUIT. "

https://www.metoc.navy.mil/jtwc/products/wp1121prog.txt