I timed myself one day, everything to do with washing/drying/folding/changing terry nappies and it came to an amazing
15 minutes!
I really liked being in control, ie it was not up to the local shop to have nappies in stock, and it was a much greener option, the concept of throwing away all that material several times a day really bothered me. The nappies were used for all kinds of mopping up too, for years!
In these days of automatic washing machines, what's the problem? Go with what feels right for you.
Good luck.