No one knows. Looking at charts you might think that the right time to buy is before the halving, but while history does repeat itself sometimes, it's definitely not 100% the same.

Seriously, just accept that you can't accurately time the bottom and just DCA if you're bullish for the long-term.

If we talk about what you expect halving, the best time to buy can be called not only today but also, generically, "yesterday." By sticking to the DCA, you deprive yourself of many nerve impulses and experience less excitement, as you will adhere to a strictly verified investment strategy at a certain time, completely ignoring the current price of bitcoin. In addition, the earlier you start investing, the more you can get in the end, since most likely, beginners cannot immediately invest significant amounts.
But the important point should be how consistently you can stick to your plan.

You already mention on your own question the keyword that will help you to answer your inquiry. I’m sure you already knew it and you are just asking for a second opinion to justify your action for self satisfaction.

Buying Bitcoin in the current price is the best answer if you want to not left out. Looking on the monthly chart clearly show as that we are already on the bottom of the last bull cycle so doing a DCA from this price is good choice if you want to a position in Bitcoin.

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If you think halving is the catalyst, then the time to buy is right now or DCA until it goes past the halving. Of course, you need to be ready even if what's worst right now happens like a huge decline in the market. Don't go all in when you try to buy, DCA is the best course of action.

Tomorrow, Amazon publicly announces accepting Bitcoin.  To not be left behind, eBay, Best Buy, Tesco, Walmart and a few more known shops decide to also accept Bitcoin by the end of January.  Now a strong Bitcoin bull market is initiated with a totally unexpected move and you were left behind.

Why look for the 'right time'.  The right time may be anytime.  Just buy if you think Bitcoin is worth buying.

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Regards,
PrivacyG

Even if we assume there was someone that knew that information that person will never reveal it to anyone as that information will be worth a lot of money, once you accept this then it is time to think about what to do with the imperfect information that we have.

And this is easy, bitcoin is already priced at a very low level and investing at any moment is a good idea, could the price go lower? Yes, but since you do not know that then you need to take decisions based on what you know and disregard the scenarios that may not come to pass.

How can you know when it's time to buy back? If it were that easy, many would have already made hundreds of millions. You can't know when the bear market will end but maybe you can sense an end or see a glimmer, the advice I can give you is to accumulate now that we are very low.

Now is the time, believe me.
We have been quite bearish in 2022, in fact we never expected $15.5K to actually be touched again after the price hit $69K as its highest ATH. Then what makes you doubt that now is the time? 2023 should be a year worth buying for your long-term investment, but if you're still unsure about the possibility of another dip then do DCA.

So if you never buy in 2022, then do so throughout 2023. It's a wise choice, but still use your funds wisely and always buy an amount you can afford to lose. One more thing, withdraw all those bitcoin to your wallet where you have full control over them.

Bitcoin is at it's lowest price for the last 2years (2021 & 2022) so now is the best time to buy, we mightn't know if the price will fall further so if you aren't comfortable holding through another dip then you can dollars cost average your investment so if it dips further you have some spare funds to buy again although it doesn't matter when you're investing for the long time.
You should note though that the bull market isn't coming in 2024 as from history the bull market starts fully one year later after the halving of Bitcoin reward, therefore we shouldn't be over expected of positive outcome in 2024 instead our attention should be turned to 2025 as from history we're to be expecting a massive rally in the market in this year.
This means we have about 1 year left to accumulate bitcoin until the bull market is fully activated. This is just my observation from history and the market might or mightn't follow same pattern so best we invest now and wait instead of missing out on another opportunity to make good return on investment.