Yeah totally agree with everyone else here. Something else that helps me is to hold myself accountable by just having a system where I cross off steps as I do them. You don't want your process to get roadblocked because you don't like one of the steps of comic creation, you want to get it done so the flow can continue, and breaking it down like this helps me to see it as a small step that won't be as bad as I think it will be.
So like this is my current bullet list, (which is a work in progress, I decided I didn't need to plan mysocial media posts months ahead) which helps break steps down so it's less overwhelming. Episodes are numbered, and each step is there.
And, if you look at Kanban Board methods, which are usually for factory production, they also do some things as a batch, and other things as not a batch. You'll have to find out for yourself what is better to do in a batch, but it absolutely makes a big difference. Sometimes I'll batch create within an episode. So I flat a batch of 6-15 panels at a time, then I color those 6-15 panels at a time, and then don't compile them into my episode (because mine isn't page format) until the end. If I were starting and finishing each panel from the thumbnail phase to the coloring phase on the final image, it would take probably 1-2 hours longer than just doing stuff in batches.
Other things I can batch several episodes at a time. So stuff like doing thumbnails and laying down font and word bubbles--those I can do 3-4 episodes at a time (and those things I wrote "batch" next to) and then formatting for upload is another thing I can do in a batch as well.
Another thing is if you realize during your process that you do an action a bunch, like if it were creating color layers, or resizing font to the same size, or resizing pages for formatting--you can turn those into actions. Take advantage of doing things digitally if you have it, and make custom actions for everything, because if something only takes a few seconds, those seconds turn into minutes, and those minutes turn into hours. And, if you do things in batches of like 15-20 episodes at a time, then being able to click "automate batch" and give every single file the correct layers is A+ very helpful.
All of my character shading is done through making actions actually, which is a little overkill of a method, but I don't ever want to go back to having to shuffle through a color library for a character that is exactly the same 1000 times over, and it means all of my layers are labelled, which is a fun plus if I ever decide to work with someone else. It's very easy to read my files.
And about colors, I think having a restrained color palate helps a lot. I have 3 palates I shuffle between depending on the mood and location of my comic. Having less choices give you more time because you aren't trying to reinvent the wheel. You already know what looks good together.