Currently, the price is over $19k. I think this is a little bit high and not really the best price for buying.
It depends on how long you are holding. Bitcoin would increase above $19000 again, but maybe not this month again. But for long term holders, it is a good buying price.
Also, you said earlier that bitcoin price can't go beyond $22.8k so it means that we will only see a downfall below $19k. We better wait for that.
DCA would be good. But I am predicting less volatile market this month. For those that want to hold, i believe next month volatility may he more and go towards the bear direction. Which means I am suggesting that bitcoin price may fall.
I think bitcoin didn't hit $25k last august but it was only close to that. $25k seems the ultimate resistance right now.
You do kit have to think, but be certain. You can use sites like Coingecko or Coinmarketcap for it, or use the exchange price for it. Bitcoin was slightly above $25000 in August.