I think we need to maintain a balance in our investments, I mean if we have the intention to buy regularly then make a special note for each purchasing period so that we don't miss it. Because balance in making purchases will make the planning we do run successfully until the target we want is achieved.
You are correct but perhaps having a note to take down the date which you intend to regularly accumulate may not really be necessary because so long as investment on Bitcoin is concerned there is every tendency that the possibility of always meeting up with your weekly accumulation process may be hampered based on other urgent needs, so in that case as a good investor you should be able adjust your investment levels the way it will suit your accumulation at that moment.
So perhaps in that scenario if your accumulation patterns are on weekly basis you could adjust it by making it two weeks instead of weekly in other to sorts out the urgent needs and before you could go back to the normal weekly accumulation.