always fully saturate. if soil wait for top 1" or so to get dry then repeat. easy as that. As far as how much water, whatever it takes to get the job done.
if simply saturating the substrate causes anything like droop, it's the fault of the substrate. Add more perlite or similar next time. if not fully saturating a dry pocket with roots could cause some droop - odd drying patterns in the soil. not fully saturating also generally causes more supeficial roots.
Plant is getting lush, so becareful how much you feed.