The bull market was started right now but ill think it is only two coins i saw increase the price bitcoin and etherium. Some of coins are not ready to increase yet but it will be going or follow to bitcoin and etherium increase the price so we must wait.
A bull market isn't started within a second or so, it is prepared for a long time and then initiated by some whales as we can see.
Well we can say it is not started yet because some altcoins are not preferably going forward increasing the price, Some of them are on dip price. As you said it prepared for a long time but ill think in this year well be started on what we called a bull run.
Altcoins are not the right indicator to determine whether a bull run has started. Only the major currencies should be considered for that and must be considered.