const {register, setValue , setFocus , watch, handleSubmit, formState: {errors, isSubmitting}} = useForm();
<form onSubmit={firstEnter ? handleSubmit(setNewPassord) : handleSubmit(authUserFunc)}>
...
<Button width='100%' colorScheme='#e4e9eb' size='lg' variant='outline' type='submit' isLoading={isSubmitting}>Войти</Button>
</form>