I think now is entering the altcoin season, because if you look at market movements since the beginning of the year, bitcoin and altcoins have been increasing slowly but surely, and I don't think the bull market will stop here.
Charts have been red for a few weeks now and I dont think there are any signs of reversing as of yet. When altcoin season starts usually bitcoin catalyses it and pushes it for the uptrend before stopping itself and then the altcoins start bleeding out. But the bitcoin pump comes first unless some altcoin is able to make the headlines with some positive news, like Litecoin forking a few year back or ethereum having a new launch.
Still dont wait for the altcoin season to come but take your decisions before that. If you plan for buying, place orders on a market and let it be. In my opinion the seasons start without telling anyone on this forum.