H4 Consular processing

Hello…

My current H1b is expiring on Jan 31, 2022.
I had filed for H1b to H4 COS + EAD.
But I have to step out of US for emergency reasons before the approval is received.

My question is - Can we do a H4 Consular processing from Canada.
Will it require a new H4 application and stamp to enter US.