Agustusceacer
Much of what can be done has already been said, constant/steady updates, catchy cover, synopsis, etc.
But there is another way (possibly).
In the writers discord, there's the TGIF mass release option. You can go to the pins in Discord and click on the announcement meant for the most current week. It'll take you to a new page with three simple questions:
1.) Book name
2.) # of chapters you're going to do for the mass release
3.) your release time
After you hit submit, I'm not sure what happens next since I never do those (currently on a hiatus) but I'm sure they'll just add your Webnovel pseudonym & novel name into a list that they post somewhere and then you just release your chapters at your designated time.
But, be warned. Don't bite off more than you can chew. Don't try to crank out 10-20 chapters for that week. four or more is fine but limit yourself. For your own mental health and well being.
From one author to another, hopefully this helped!