With this your calculation it's even more scary to hear and see this because our monthly income is very poor here , how them can we get to 1 BTC at this point, the best thing we can do at this point is just do your best and leave the rest , because trying to get to 1 BTC when you don't even have a good leaving and strong future background, if we trace to have 1 BTC I think we can't even get it , all we just need to do is to invest so we can get to over accumulation stage, where an investor is only allowed to sell some percentage, and not to depend and be fighting to have 1 BTC which is so much money and not easy to get.
One thing I use to tell people is that they should never underestimate the power compounding, 1 BTC may seem to be very big in monetary but with gradual accumulation one can get there if the accumulation is done consistently. however, reaching 1BTC in accumulation should not be the primary aim of any investor, a good investor already drafted his target before even going into the investment. One just need to work towards their set target and not stress over how much you've accumulated as income varies, some investors may never get to 1BTC but that doesn't mean they are bad investors, but it's just that their income is relatively low to get them there as their discretionary income can only get them a very few sat.