The first 2-4 weeks after launch are key.
When your podcast first launches you have a great opportunity to gain momentum and give your podcast a springboard from which to grow.
Launch with momentum.
Having a selection of episodes available from day one can create habitual listening in a short space of time.
Having a trailer uploaded before the first episodes go live is a great technique for preparing your podcast for subscriptions and also making that first listener click more accessible.
How Can I Improve?
Create a trailer for your podcast. Contact me for some guidance on this but usually this will be a short recording by the podcast host (around 1-2 minutes usually) outlining the key features of the podcast and what listeners can expect from the show.
Upload the trailer episode to all platforms before you start uploading episodes. Having the trailer available first provides two functions.
1. It teases the audience and creates a sense of occasion around launch.
2. It allows you to ensure the podcast is available on all of your desired platforms before you commit to a full "launch".
Launch your podcast with a selection of episodes, not just one. Having one episode available gives listeners nowhere to go, whereas if there are a few ready to listen to this can create habitual listening. I recommend launching with 3-5 episodes initially.
Finally, and arguably most importantly, do a massive push for reviews in the first two weeks. Pick a platform to focus your reviews on (Apple Podcasts is usually best), and ask friends and family to leave you a five star review.
If you can get around twenty reviews in the first two weeks of launch you stand a good chance of getting in the "New & Noteworthy" section of Apple Podcasts. This will give you an initial kickstart to your listenership.
After the initial launch period, message two people every day asking them to leave your podcast a five star review.
The first 2-4 weeks are very important for a podcast launch;
A trailer is a very powerful promo tool;
Do a big push for reviews initially, and continue the push after launch.