This is a sensible approach.
I understand that you're very keen for your comic to make money. I respect that, and I totally get how you'd see it as a potential means of escape from an unpleasant living situation. No judgement from me on that goal.
But with that goal in mind, I will give you the best advice I can as somebody who has been in the industry as a professional for years:
If your number one goal is to make money from your art, then your number one priority is to make your art as a product that will sell, to the point that it may be necessary to sacrifice some of the project's personal appeal in favour of a style, genre and content that will appeal to the audience.
I make a pretty personal comic. Errant isn't well-optimised to make money on this platform, like it's not a sure-fire hit. The artstyle doesn't match the most popular comics here, it's in one of the less popular genres on the site, it doesn't have an easy elevator pitch. It's a gamble, taking a chance on the hope that maybe I can make a project I'm passionate about and have it see some moderate success... but it's a gamble I can take because I have a day job that comfortably pays my rent and another, more likely profitable project in the wings. This allows me to make a very personal comic filled with all the things that I love; gutsy ladies, deconstruction of patriarchal narratives, bright colours etc.
If I was desperate to make money though, like say I lose my job and I'm like "oh crap. I need to make a comic that'll make me money to live on." I wouldn't make a comic like Errant. I'd make something with a hot protagonist set in a more generic Fantasy world, maybe even an isekai, and it'd have a really simple big concept to the story like "Oh no, I was reincarnated as a dragon slayer, but I discovered the dragons are nice and I want to save them all!" Basically I'd research what's popular on Tapas and I'd imitate it. Sure, put my own spin on it, but I'd jump on those tropes and trends and try to make something that fits in. It'd be unlikely to be a big classic that people remember for years, but have a pretty high chance of being a solid, good performer that makes okay money. A safe product that supplies where there's demand.
I'm not necessarily a fan of the fact that under capitalism making a work of art that's a personal passion project is a privilege afforded to only those with money and/or a big fanbase, but unfortunately that's the hand we're dealt. Your modern/sci-fi adventure comic about a sibling relationship with a slow plotline that's not an easy "elevator pitch" is clearly something you're very passionate about personally, but may not be the best project if your goal is "get to the point where my comic can make money as fast as possible on Tapas, a platform where the majority of users are 20 year old women."
As others have said, a break or short comic to study and build your skills is probably a good idea. Your work isn't miles off professional quality, but it's not quite there yet, with the main weaker areas that need focus being colour theory, anatomy, line weight/tension and panel composition/visual storytelling. While poor looking comics can sometimes succeed, they're more commonly comedic in nature, or while rough, have some kind of overall charm and consistency to them where they can pull it off. Try to compare your work to people working in the same sort of genre and style to you for a better guage of where you stand in terms of quality, and for inspiration on where you need to improve.