No podcaster in history has ever just run one show. In fact, many find their biggest or most successful podcasts to be a second or third attempt. They’ll learn the ropes on the topic they think they want to discuss, then start a new one later on, on a completely different subject.
If you already run a podcast, then starting a second (or third, or fourth) is inevitable. BUT, if you’re just constantly starting new shows, you probably won’t get any momentum or success with any of them.
SO, if you’ve got an idea for a new podcast and are itching to dive in, this episode provides you with a checklist of questions you can run through first.
Resources 
<ul>
<li><a href="https://www.thepodcasthost.com/ten" target="_blank">The 10-10-10 Podcasting Challenge</a> </li>
<li><a href="https://alitu.com/" target="_blank">Alitu: The Podcast Maker</a> </li>
</ul>

No podcaster in history has ever just run one show. In fact, many find their biggest or most successful podcasts to be a second or third attempt. They’ll learn the ropes on the topic they think they want to discuss, then start a new one later on, on a completely different subject.

PodCraft | How to Podcast & Craft a Fantastic Show

Should I Start a Second (or Third, or Fourth) New Podcast?