If I cook this now, will it be ok at 6pm?

[Yebs]

Not sure if it'll be a bit worse for wear if I don't make it fresh?

Attached last bit of instructions as you cook the Tom's and feta and then stir the pasta, tenderstem and parsley. Will it cook in advance better if I cook certain bits fresh?

I would do it fresh or part cook it and reheat / finish off and do the pasta and herbs at the end.

Or would just have it all prepped in advance.

Looks lovely btw. Is tenderstem broccoli that is added?

I wouldn't cook that in advance. Broccoli especially doesn't reheat well.

I really think that kind of dish is best done fresh , looks lovely thou !