I have the stash I have today because I started stacking 6 years ago... and didn't flip my sats for shitcoins or trade for the gainz.
When I started, the price was in thousands... but it wouldn't have helped me to worry about missing the glory days of faucets and cypherpunks throwing hundreds of bitcoin around like it was popcorn.
One way to think about it is 'sats per person', or a satscap... roughly 250,000 satoshis per person. If they adjust the monthly fiat spend to buy that many sats per month, for as long as they are able... it's a good accelerator.
If they believe in bitcoin then they will start. If they don't then it's pointless starting because they'll flip or sell at the most inopportune time and be bitter about it.
In which case, do the right thing and buy a satscap (or more) for each of them, and hold it on their behalf.
Hope these recommendations are of value ✨