BL is just a red herring!
Now, on to actually helpful (I hope) advice! While you have posted large updates, you've only posted three times on the site, and of those three, they were months ago. If you want to space out larger updates, that's fine, but to grow your comic you should post regularly and consistently. Decide how to format and pace your comic so that you can do that. Cross-promoting instead of continuing to update your comic is actually a really poor way to gain attention!
Why should you update regularly and consistently? Every time (max once per day) that you update, you appear in the Fresh section. When you appear in the fresh section, people looking for new and recently update comics see you. If enough people see and interact with your comic, you have a chance of being launched onto Trending, which is very visible among community comics, and that gives you a greater chance of being seen. But these are brief windows of being seen, so you maximize eyeballs on your comic by posting more often.
That doesn't mean you have to update every day, or anything. If you want to go once a month with big updates, that's fine, but that means its one chance per month to draw eyes to your comic. None the less, you should be updating with some degree of regularity to 1. bring people in, and 2. Give the people that have subbed a reason to stay.