Perhaps you’d like to watch the ‘New Lassie Show’ from the late 1980’s -early 1990’’s. Jon Provost is on for a few episodes as an adult ‘Timmy’. June Lockheart and Tom Rettig are on one episode, each, too.
I've noticed that too :( (I didn't know the season, but I noticed 2 of them inpartiicular were repeats from another season) This was the WORST season I've seen yet!!! (I haven't seen the other 2 yet)