i see the problem :). you can possibly inconspicuously dig the pot in 3-4" into the soil, to keep it from overturning - it'll root thru the bottom and should be able to get more water this way. in your hot temps and small pot - you can't miss more then a couple of days watering. the hotter it gets, the more water it will need. and if it dries up it will decline fast. they hate drying up. you can then cut the roots in the fall with the knife - should be easy enough while they are not woody - i'd recommend doing it in the fall once the temps go down. and doing it ev year. may be even twice - in spring too, if there was any winter root growth down - just to keep it from bursting the pot
the roots will also anchor it - so it won't flip in the storm. and if you need to be away for more then a few days that can save the plant.
there's another trick for longer absences - get a 1/4 braided acrylic core nylon rope in HD, soap it up so it wicks better and push one end down as far as you can into the pot - at the side. then push it in around the perimeter full circle, 1-2" deep below the soil level and drop the loose end into a bucket with water (a liquid detergent giant container works well, very sturdy - you can duct tape it to the side of the pot, so it does not flip). putting some mulch on top of the soil would conserve moisture too. it's not that hard to do - i do it for my balcony plants all the time.
