Welcome to YT!
I think 2 times a week is an awful lot of baths -- Right now in winter mine might get one every 2-3 weeks, unless they are dirty, the rest of the yr it is 1-2 weeks.
I do it a tub, yep, I'm leaning over but my tub is high enough they can't jump out and rather than a spray nozzle I use a huge plastic cup that I just fill with water repeatedly and rinse with. I have placed them under the nozzle - definitely they are not fans of it, but the cup they do not mind so much - it doesn't make noise and there is not all that pressure behind it