This iconic ostinato is, well, obstinate! It's all keeping time and being the glue that holds it together. Of course, that's a huge part of our role as bassists anyway but this groove has no room for fills or derivation. It is what it is.
There is, of course a little "bass solo" , if you will, to break it up a bit but concentrate on time and consistency. It's not as easy as it sounds.
I've done something a little different -at least for my videos - and added my entire isolated play along after the play along with the track so that you can see and hear more clearly what I'm doing.
I'd be interested in hearing if that makes a difference for you.