The good news is you have a solid start. While you have nothing to be ashamed of now (nice use of the palace/hovels scene setting to convey information without outright stating it. "showing not telling" and conveying information through the world and action instead of direct infodump is preached by everyone from stephen king to chuck palahnuik) As you draw on a regular basis and keep improving your skills and personality will start to shine through your art and writing.
The bad news is that you have a solid start. And nothing more. You're all of 11 updates in. To borrow the RPG tropes you lean on, you haven't even assembled the party. There are characters on the splash page we haven't even met. And until we face the first boss, until the tension ramps up and you've built up the characters, the humor and the just plain awesome things that can happen in fantasy: the comic is on probation for readers. It might show promise, but it has a way to go before it actually can deliver on it. Advertising draws attention. Content is the reason people read and come back to a webcomic. It sounds like you blitzed hard when you were launching. And you've done a very good job since then keeping up with regular updates. That's solid.
If you're worried about people leaving because of the pacing... well that's the nature of the medium. You are trying to tell a dramatic story two pages a week. Some people won't have the patience for that and once they realize that, you're going to lose them. I assume you're doing this because you want to tell a cool story, and if so that's great. But you are going to lose some people along the way. Try not to let it bother you. I'm sure you'll get harsher criticism down the line (the internet is full of jerks...).
Buuut if you want to up your webcomic game while retaining subscribers there are some things you can do. I'd suggest two things: work really hard honing your pacing and humor. Yes, pacing. You can have an entirely dramatic/interesting comic that updates once in a blue moon and still keeps people coming back. You just have to understand that if all people get is one update, that update better work well on it's own. For comics that pull off once in a blue moon updates with a stunningly loyal audience, check out whitenoise.com, kagerou.com, heart shaped skull, mushroom go (now ended) and dresden codak. These comics of varying skill often broke the cardinal rule of regular updates, but they manage to keep a huge audience nonetheless. They rely on making every detail count towards telling the story and providing information in coherent chunks. There is an art to making comics dynamic and interesting. If you want to keep readers, this is a huge edge. Study what you can.
The other option is humor. I know you already employ this but take a look at one of my favorites paranatural.net. They have like five jokes on the average page. But it's all character based humour and it moves the story along (note: zack also does a very good job of providing plot progression in each comic). While pacing could take a while to dig its claws in unless you have time to dream up a slew of amazing details (effective but subtle establishing character elements, awesome bits of character building, rapid and sensible plot events, beautiful scenery porn) coming down the line, working hard to make parts of each update funny while conveying the maximum amount of information in the minimum amount of panels and direct acknowledgement will go a long way toward keeping those uncertain followers.
If you're having trouble with these elements, consider using some friends as a test audience. See if they can help you vet your jokes, find ways to present information naturally through actions and art, and reduce the total word and panel length to highlight your best work while obsoleting the filler. Best of luck!