Some drilling ideas

Neck clinch pummel

Outside hook same side knee, trace hand over head, and go to skip knees, transition to (a) thai side clinch, (b) double underhooks, or (c) front head lock

Drive to the wall

Four straight (JCJC) clinch to wall straight knee to skip knees fit takedown

Rip off strikes

Throw JC, defend JC, clinch and rip to wall, 3 skip knees