Crypto is unpredictable, you invested in this ESH for a reason, I think you need patience since development is still ongoing, you might end up been surprised what the future holds for this project, non active team is another thing entirely but that's not the case here.
Im not an expert when it comes to investment, but i have a background knowledge since we have Investment subject way back.. before you decided to invest on something, make sure that you're doing research and background investigation . also I advise that we should not put all of our money on 1 basket. One of the most important ways to lessen the risks of investing is to diversify your investments.