AzureAD B2C password change flow without sign in

Question

I have the password change flow set up from this walkthrough. However, I'd like the password change flow to begin when a user clicks a button when already being signed in. So I'd like to remove the sign-in portion of the journey, which seems to be the first two orchestration steps. However, the old password check is done using the "ObjectId" which is passed in from the 2nd orchestration step. Is there any way to obtain the ObjectId without requiring the user to sign in?

Password Update user journey:

  <UserJourney Id="PasswordUpdate">
    <OrchestrationSteps>
      <!-- **I'd like to remove this** <OrchestrationStep Order="1" Type="ClaimsProviderSelection" ContentDefinitionReferenceId="api.signuporsignin">
        <ClaimsProviderSelections>
          <ClaimsProviderSelection TargetClaimsExchangeId="LocalAccountSigninEmailExchange" />
        </ClaimsProviderSelections>
      </OrchestrationStep>
      <OrchestrationStep Order="2" Type="ClaimsExchange">
        <ClaimsExchanges>
          <ClaimsExchange Id="LocalAccountSigninEmailExchange" TechnicalProfileReferenceId="SelfAsserted-LocalAccountSignin-Email" />
        </ClaimsExchanges>
      </OrchestrationStep> -->
      <OrchestrationStep Order="3" Type="ClaimsExchange">
        <ClaimsExchanges>
          <ClaimsExchange Id="NewCredentials" TechnicalProfileReferenceId="LocalAccountWritePasswordChangeUsingObjectId" />
        </ClaimsExchanges>
      </OrchestrationStep>
      <OrchestrationStep Order="4" Type="ClaimsExchange">
        <ClaimsExchanges>
          <ClaimsExchange Id="AADUserReadWithObjectId" TechnicalProfileReferenceId="AAD-UserReadUsingObjectId" />
        </ClaimsExchanges>
      </OrchestrationStep>
      <OrchestrationStep Order="5" Type="SendClaims" CpimIssuerTechnicalProfileReferenceId="JwtIssuer" />
    </OrchestrationSteps>
    <ClientDefinition ReferenceId="DefaultWeb" />
  </UserJourney>

ObjectId is outputted from step 2:

        <TechnicalProfile Id="SelfAsserted-LocalAccountSignin-Email">
          <DisplayName>Local Account Signin</DisplayName>
          <Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.SelfAssertedAttributeProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
          <Metadata>
            <Item Key="SignUpTarget">SignUpWithLogonEmailExchange</Item>
            <Item Key="setting.operatingMode">Email</Item>
            <Item Key="ContentDefinitionReferenceId">api.localaccountsignin</Item>
            <Item Key="setting.forgotPasswordLinkOverride">ForgotPasswordExchange</Item>
          </Metadata>
          <IncludeInSso>false</IncludeInSso>
          <InputClaims>
            <InputClaim ClaimTypeReferenceId="signInName" />
          </InputClaims>
          <OutputClaims>
            <OutputClaim ClaimTypeReferenceId="signInName" Required="true" />
            <OutputClaim ClaimTypeReferenceId="password" Required="true" />
            <OutputClaim ClaimTypeReferenceId="objectId" />
            <OutputClaim  ClaimTypeReferenceId="authenticationSource" />
          </OutputClaims>  <!-- here -->
          <UseTechnicalProfileForSessionManagement ReferenceId="SM-AAD" />
        </TechnicalProfile>