No need to do anything until one or both accounts expire. Check your expiration date in your App store account. As App subscriptions automatically renew, you should cancel your subscription to avoid double paying. When both memberships have ended, you can then purchase an All Access Pass to get the most value from the offer. Be sure to sign in with your App login once you get to the App activation step.
Wait until your Nut House membership is close to or has expired. As App subscriptions automatically renew, you should then cancel your subscription in your app store account, before purchasing an All Access Pass membership for $40 ($8 discount) from the Nut House. Be sure to sign in with your App login once you get to App activation step.