It can be difficult to say for sure what any person should do, yet if a person invests similar amounts of value on a regular basis (such as weekly) for 4 years straight, then their average cost per BTC will be right around the 200-WMA - and historically, an overwhelming majority of times, the BTC spot price is at least 25% higher than the 200-WMA.
That's where the success is i.e. keep investing regardless of how much money you have. It's best to invest whatever you have instead of not investing at all. If you see bitcoin 200 WMA vs spot price then most of time spot price is higher then 200WMA except from Jun 2022 to Oct 2023 where spot price of Bitcoin went below 200WMA. Today Bitcoin spot price is 2x times the 200WMA
https://bitcoindata.science/withdrawal-strategyOf course, there are no guarantees, so any of us who might be attempting to think and act rationally, may well consider that it would be good to invest into bitcoin for a whole 4 -6 years or more and then perhaps to reassess after that. Surely if we are able to frontload our bitcoin investment, then we may well have differing results, yet there are not too many normal people who are easily able to frontload their investment into bitcoin. And, yeah, for sure, each person has to decide for themselves whether and if so how to invest into bitcoin.
Forget about the one who are not easily able to frontload their investment into bitcoin, talk about the one who are willing to invest in Bitcoin. The one who don't have any doubt about Bitcoin that it's price will go high with passage of time should invest in Bitcoin for 5 years at least and if they are not in rush then they might HODL for even longer duration.