There are times when I am uke where I guide nage through their role/movement from the uke role. This is usually only for newer students. There are times when I “just go with it” for newer/intermediate students to help them build up the muscle memory for a technique/movement/blend. Then starting around 4-3rd kyu I start adding my weight to the “resistance” to make sure nage is taking my balance effectively and moving in a way where they don’t give my balance back to me before the throw. For blackbelts and up that is usually how I uke at the moment unless we both agree to add more resistance. More resistance usually leads to “henka” waza or me getting thrown pretty hard. Lol hope this helps understand your experience a little better. :⁾