It definitely gets easier with practice, though I sure hate going potty all the time
You know those 32 oz cups from QuikTrip, that's what I drink my water out of. I fill it with ice and water and sip away. A bit later I fill it up again and drink for awhile.
I've been working on 1.5 gallons a day. Yes, I know it's a lot, but I'm trying to keep swelling away, and it's working.