30 minutes of TLJ is prequels bad, 1 hour is solid, and another hour is pure gold.
You’ll probably hate it but, imo, THE fight is worth the price of admission. Pick a matinee show if you don’t want to feel too cheated.
I thought TFA was good, but not great. I watched it again after TLJ and found myself really liking it, probably because TLJ made me care about the characters more than I used to.