It is impossible to know if it will go down further, and how far. I think the prices are attractive enough to invest. The advice is that you do not invest all your capital, reserve an amount, between 50% and 75% in case lower prices are seen
Some people are still waiting for the dip and we still don't know if we already reached the bottom of it yet to happen. It would be best to invest while the prices are still quite cheap than to wait for the bottom because the market might also recover soon. It's fine to wait for the dip but sometimes grabbing the opportunity to invest would be a wiser decision we can do.