One of the hardest things as an author is learning to be patient. After submitting manuscripts to publishers then hearing nothing for weeks, months or even years, sometimes it’s tempting to follow up.
Publishers are very busy people with hundreds of manuscripts to read, often in their own time. The last thing they need is an impatient author taking up their time to check on the progress of a submission.
My advice is that you make sure your manuscript is as polished as it can be before submitting according to the publisher guidelines on their website, then move onto a new project. Not only will it take your mind off the wait, but when the publisher does contact you and asks if you have any other stories, you can respond with an enthusiastic ‘yes’!
Good luck and happy waiting!