There are people who do not have a stable monthly income like normal salaried workers, but they may have a source of income based on projects, seasons or business, so the accumulation can be different a little bit. Maybe they won't buy every day or every week, but will buy when they receive money and buy according to the percentage of income they have. Regardless of whether that source of income is stable or unstable, more or less, it does not affect your purchase of Bitcoin, unless you do not earn income. Not being able to buy every day or every week for people who do not have a stable income can cause them a bit of difficulty as cumulative buying habits are more difficult to establish than for people with a stable income. Too much buying distance can reduce their discipline in buying.
Regarding not stable monthly or weekly income is not problem with how much dollar accumulate for investing in bitcoin possibility invest weekly or monthly. I think very important about decision want to accumulate keep investing in bitcoin indeed not get stable with salary income, since close ahead of Eid al-Fitr I have smart with spending my income and little reduce for investing in bitcoin but promising for my self one month later will accumulate more fund for investing in bitcoin.
But still don't delay investing in bitcoin during you have side income or weekly income how to get discipline when investing in bitcoin, if some time earn much of payment salary need to spent large amount for investing in bitcoin become our future investment assets, save bitcoin today automatically will save your financial in the future.