The BTC ETF approval couldn't spur a major price action as expected by many and the only expected important event that could define the the long awaited bull run would be halving but question is how long does it take for halving to impact price
No exact time frame for its impact to take effect. You may consider looking into the pattern in the past bull runs and it's gonna be like several months to even more than a year before you finally see the impact of it for the price. and are we in that period called "last buying chance before bull run?"
Take this as there's always the chance to buy before the bull run. If you miss this time then wait for the next cycle on 2028's halving. That's all for someone who might miss this bull run and haven't bought because of being conscious and doubting whether it's good to buy now or not.