Unlike his anime counterpart, this Jiren actually takes action right from the beginning. But after knocking away Hit, this Jiren is stuck with Goku for the rest of the tournament for some reason. In chapter 36 Base Goku and Jiren do a starting contest before we cut to other fighters. Towards the end of this chapter, Damon and 17 break up their fight and Dyspo tells Jiren to retreat. Chapter 37 we don't see Jiren at all, but Goku is fighting Pride Troopers with Roshi before he goes help Freeza against Kale. 38 starts with Kale leaving Goku and Freeza to go on her rampage. When we see Goku again he's in base, telling Jiren to go help his friends. Jiren should literally be capable of glaring Goku into oblivion here.
The only times we see Goku and Jiren actually fighting is Jiren catching Goku's punch in 36 and casually clowning Goku in 39. If Goku could destroy Freeza and go come within 5 minutes on Namek, why is Goku unscathed, seemingly not even tired after over 15 minutes with Jiren? Unlike Hit the guy is actually immune to Goku's charm, and as I said earlier it's not like this is the Jiren who spent half the tournament sleeping medidating. He just stands there and says "give up Goku you can't do anything". Ugh.
Also, what's up with this? 17 and Freeza were literally standing on the border! You could've just pushed them!