I think you meant that to OP.
I’d say this - like any student at any school, the student has earned the right to wait until the deadline to decide what they want to do.
And if they are undecided, there is certainly no reason to give up their place until they are ready to do so.
One school of thought might be - do Psych (or another major) and if you realize you made a mistake, revisit later.
Another school of thought - start in the more competitive major - and if it’s not right for you, drop later…similar to what happens to many in engineering who aren’t 100% sold going in but still start there.
I’m risk averse so I’d likely go #2 - but everyone is different.
OP just doesn’t truly know yet if nursing is right for them - but that doesn’t mean they should give up their spot. Only they can decide.