Job hunting.. baby soon

So how early is too early to start searching for new job? I’m due with my first December 29th & I’m planning to stay out of work til April. The thing is I don’t have the desire to return to my current job, I’d honestly leave this place now if I could. I’ve been looking at a few options, but haven’t put in any applications yet. So with knowing I’ll be basically out of job starting January, & I don’t plan to work until April when would you start AVIDLY applying to jobs?