From what I understand, the only catalyst is .. year 2020? That could make sense only because of the halving, but I tend to believe there are multiple factors needed for a "pump like crazy" and simply "year 2020" is not a valid factor.
So the halving could be one factor. We may need some more to cause the FOMO, else it'll be "just" normal growth, if any.
True, but time is also necessary for the bull market to build up for several reasons, many of those that are still in the market and believe in cryptocurrencies have invested already everything they could in the market so it is impossible for us to invest even more money, and at the same time new investors are not getting in the market because they lost their money when the bubble disappeared or they are afraid the crash is not over and we need stability and time to get their trust back.