It would take more than a few hundred Jedi just to run that huge building in the capital, let alone all those fighting off world and meditating in caves etc.

This a problem with the PT.

While Mace is probably right about there not being enough Jedi to fight a Galactic war, they have maintained the peace for a thousand generations and have a lot of kit and personnel.

By focusing largely on that silly round table room for the majority of the time you never get a sense of scale to the organisation.

The Senate had a handful of people representing sometimes more than one planet.

You get the impression that there were more Jedi from each planet than political representatives look at the scale of the Senate chamber, and the Temple appears to be bigger than that.

And the Temple doesn't house the entire order.

With no more Clone Wars to fight that would free up a lot of troops as most of the Separatist personnel were easy to switch off droids.

But the Jedi are trained to hide.