No one knows what will happen, people just make predictions based on their portfolios and they will make predictions that are favorable to their investments. So you need to have faith in your own choices and decisions instead of asking others.
People who ask this question and worse repeatedly ask this question many times, actually did not prepare well before starting. Like they did not research about the market, which cryptocurrency is a leader of this market, its market cycle history, and very importantly market psychological cycle. So after entering the market, they nearly instantly become confusing about chance of profit and risk of loss. It's time for them to start asking questions, and repeat those questions when market is bearish and their portfolios are in temporary loss or big loss.
I also don't know when DOM will drop and when altcoin season will come but I want to tell you this. In previous cycles, altcoin season always comes in the most unexpected way, when most people no longer believe it will come and most give up, it comes. Many people don't believe there will be an altcoin season, sometimes that's a good thing and a good sign.
Market DOMs are biased considerably by many new altcoins which are launched very easily with smart contracts. The abundant altcoins and bigger cryptocurrency market cap mean it's harder to pump all altcoins like in previous market cycles that had smaller market caps.
Bitcoin dom can drop, altcoin dom might increase but it does not mean all altcoins will have their parties.