Ah ok thanks for the tip highly appreciate it and it is normal to see yellowish pee right?It isn't that hard to understand. The tortoise isn't drinking because it isn't thirsty. It is hydrated to the max from all the soaking you do, so it doesn't want or need to drink every time you stick it in water.
FYI, I kept multiple sulcatas for 8-10 years and probably only saw any of them drink water about 3-4 times total over that entire period.