Considering the market value of Bitcoin from January 2019 to July 2019, I believe the bull run of Bitcoin has started but it is kinda at a slow speed.
I second your opinion, bitcoin is already in bullish trend started in march/april
do not expect a straight upward chart line without any downs, that's impossible
we should expect this last up to a few months after halving day or even mid 2021
but we will see a few corrections along the way, that's normal even in a bullish market