In this case, I think it makes sense to use two separate forms: one with the 3 fields you need on one page, and another form with all the repeater fields on the other page. You could still have those save to the same place — in your case to a user.
Alternatively, if you need to use the same form for both pages you might have to disable the ‘required’ fields in ACF and then use some front-end validation like jQuery validate: https://jqueryvalidation.org
While a bit hacky, you could then add ‘required’ asterisks to your fields in your theme after the field label:
If it isn’t possible to edit the form label html directly you could use jQuery to append them or with css using the
:after pseudo selector.
I don’t see any disadvantage to creating two forms in this case.
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