Consistency is key
Unfortunately, it took me a very long time to get this important truth through my thick head-
Listing on a daily basis is crucial to a healthy, thriving, and profitable reselling store. I have read a lot of content online and watched many reselling youtube channels who have tested this theory. Conclusion? There is strong evidence that would suggest that this is accurate.
It makes logical sense. Platforms such as EBay, Poshmark, Mercari, Depop, etc are businesses. They make money when items are purchased on their platform via seller fees. Their algorithm is going to support sellers who list regularly. Of course, there are other factors that influence who gets shopping traffic. Such as feedback score, return rate, shipping speed, and more. However, if these metrics are being satisfactorily met, listing regularly will set your store up for success.
I highly recommend coming up with a photographing and listing. Something manageable.