As far as I can see, the only way to get around this is to get a Gnarbox, WD MY Passport Wireless, or some other wireless unit (I see a whole bunch of them on Amazon but don't know how good they are, and I'm not even sure if they still work OK after the update). I got the 512GB model to avoid having to do that, carrying around another piece of hardware.
I highly recommend getting a ravpower FileHub... they cost about 50$ us approx and works perfectly wirelessly as well as giving you the aditional benefit to expand your iPad storage and also does things like being a power bank too. You can also use it to use as a portable router as well.
In my opinion it does most that a gnarbox does for 1/10th of the price.
I use one and use my 1TB drive with it and never have storage problems. It’s got the added benefit of a one button push backup of my sd cards whilst I’m on the road too... no power needed it uses its own battery bank so I can take somebody footage... then on my drive home put my Sd card in and plug in my 1TB drive and hit the button and it will backup whilst I’m driving home.