Looking for tips how to make larger coffee with picopresso

Long story short, I bought the picopresso, but I did not realize how not enough coffee is in single portion from 18g.
I am used to sipping a whole cup of instant coffee for half an hour, so having so low amount that i can gulp in one is really gamechanging. I am looking for ways that i could raise the amount of coffee i get.

1st option I thought of would be to add directly hot water to the espresso.
2nd, I might add the hot water to the picopresso and run it through the same puck, but I am not sure if thats a good idea.
3rd, buy a steamer for milk and make cappucino/latte. That would increase the ml of the drink without ruining the taste (i guess).

Or should I just return the machine and get back to the old ways?
What do you think?