Those who wait for a specific price to invest are definitely making a big mistake because Bitcoin's movement or its fluctuations can never be predicted, but if you wait to invest, you may panic later due to Bitcoin's volatility, so you may eventually give up.
So consistency is the best investment decision here, invest as much as you can afford to lose, and no matter how small the amount, the goal here should be long-term, and the investment method should be to deposit Bitcoin through DCA consistently, but it will definitely bring positive results.
You can’t wait for a specific price before you invest in Bitcoin, Bitcoin can not be predicted and with the way Bitcoin is going you can’t wait for a perfect time to invest because it may lead to regret at the end, you can invest in Bitcoin in different ways and you can meet up with your demand or the amount of Bitcoins you want to buy, using a DCA method is the best way to buy when you want to meet up with the quantity of Bitcoin you want to buy, one thing i observe with some newbies when they heard invest as much as you can lose is that some think they can buy Bitcoin with any amount and be expecting big profits, the more you invest the more you earn profits that’s how Bitcoin works.
What of in rough times, I had a family friend who battled illness I had to be there for her and I used my little Bitcoin saved. I am not crying over it because I can still continue to save more the little way I do. I don't think about big profit now but continuity.