Comment by defrost
The ideal flow is investing a lot of time in (say) the first two or three years (three full season cycles gives you a fair amount of exposure) getting the swing of watering, planting, sowing, gathering waste, etc.
With any luck you can then transition into barely spending an hour at most a day (on most days) keeping things ticking along .. bursts of weeding, pruning, turning soil as needed and letting the plants do the work.
It's good steady exercise keeping on top of a substantial but "small" home garden but it doesn't have to suck up all your time once you get the swing of it.
I'm fortunate the prior owners have most things setup. They were older so some of the maintenance around trimming is behind, but I am learning. My problem now is, I don't know what to do with all the oranges. I've been giving them to the local restaurants in town, but I don't think they even want any more. Good problem to have I guess :) Next up is learning how to make marmalade.