Your focus on paneling can help on a page-by-page basis. Not every panel has to be an actions, some can be time-appropriate between-the-action panels. Like an establishing shot of the sky to tell you what time it is, or a close up with the shift in expression in a character's face before saying something. (Just don't go overboard, it's a webcomic not a crime solving show lol!
) Because in real like we have in-between content, especially in social exchanges. The only time you'd usually jump quickly from panel to panel is for scenes that're meant to be read as fast-paced.
If you do things like that, it'll help with your pacing without the need to add in godawful amounts of filler.