Bribing the city should help in the short term. Have a look at the Revolution cheats screen, that should tell you exactly how much the various variables contribute to the city's instability. distance is probably a massive factor. Garrisoning absurd amounts of units should also help (see the total positive revindex modificator? that's how many units you need to just keep it flat, and more than that to bring it down). You can build buildings even while in revolt: use traders/caravans/freights. They add hammers to the build even in anarchy, you just need one turn of productivity to "officially" complete the building. by moving around buildings in the city build queue, you can set multiple builds to receive the hammers from the trade units, leave them all queued so that during your turn of activity they all get completed (this obviously also requires Multiple Production enabled). Alternatively, or even concurrently, if you're rich and can rush builds with gold, do so during the turn of activity, putting new stuff at the top of the build queue (ctrl+click) to rush more than one item during the same turn.