a market situation that is still weak is not the right time to sell, it will only make you suffer losses unless your situation is pressed. I mean if you have investments that are difficult to develop, then sell losses and replace them with a worthy investment, one way to avoid large losses.
You need to reassess your position knowing all the possibilities you'll be able to cut your loses and try position yourself back and recover,
though it's another risky move but if successfully escalated your chance to earn or recover back is really high.
Hold if you do trust the project and you still see the progress out from the developing teams.