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That's is my plan as well. My take after a bunch of reading is that the 6F35 fails because the fluid loads up with wear products (especially from the Torque Converter Clutch), rather than because the fluid breaks down or has additives (e.g. TBN boosters etc) that get used up. Taking out a third or half of the dirt every 10k should give about the same average dirt level as taking it all[most] out every 30k, but with lower extremes on both the dirty and the clean side... plus it is convenient (IMO) to add 20 minutes to an engine oil change, rather than spending a morning messing with multiple drains, fills, and warm-ups. I haven't actually done a change yet because I'm trying to figure out why my trans never gets hot (above 70C) and is slow to warm up (15 minutes to get to 50C), plus I'm researching external spin-on fluid filter set-ups.