A couple methods I'd recommend:
setting hard and fast deadlines for posting stuff online! put a time that you're going to post the page on the website and holding yourself to it can be hard, but it'll help you get in the habit if you feel accountable to readers. (if the idea of this stresses you out, maybe find a friend or friends with a similar goal and sort of hold each other accountable? the idea is to get that community motivation like from Inktober) - you could even do a trial run for a month and do something like diary comics or single page narratives to test schedule and workflow and learn how quickly you can expect yourself to work, etc
doing some timed drawings as practice, and honing your workflow to the essentials!
knowing yourself and your process and adjusting your deadlines accordingly - if every week is too much and will stress you out, maybe start off every 2 weeks to give yourself that cushion, and if you feel your process speeding up you can jump to weekly
either alternatively or in addition to the above, you could also try working on a seasonal status and work on building up a small backlog of pages before launch and during the breaks in order to have a just-in-case stack for when you're travelling, or get sick and don't work as much, or any other stumbling blocks that happen like losing a file, etc.
I'm not going to bullet this because it's not technically deadline advice, but one more quick suggestion: try to have as much fun as possible with whatever you're creating, you'll most likely be driven to work on it more, and making art should ideally be a fun, challenging thing that doesn't just add deadlines and stress to your life.
Sorry for a huge chunk of text, I didn't mean for this to so long, but I hope it helps!