You just need to make sure that you are accumulation Bitcoin cycles correctly. Don't slow down your Bitcoin accumulation until discretionary income is maintained because if you can't assess the timing correctly, buying at the wrong time will increase the average value of your portfolio.
Can you please educate us when you think is the wrong time for investing in Bitcoin, if actually there is something like that. Being scared of your average cost of your portfolio increasing will make you skip buying bitcoin even with DCA method? I don't agree with you on this as I don't think there is a wrong time for an investor to buy bitcoin. I find this your teaching misleading. Your teaching is also encouraging timing the market before buying bitcoin which is also against the ethics of investors and the principles of this thread.