How long should I wait before undergoing local anesthesia again?

Thank you for posting your question here !My answer will be based on the limited information provided, for a detailed and personalized answer I would recommend consulting with your plastic surgeon in person.
The short answer will be it depends on your surgeons preference. I would say for minor surgeries like the ones you mentioned , you can likely have them done under the same setting , your surgeon will calculate the allowable dose of local anesthetic that can be used and will not exceed that , but for small procedures like the ones you mentioned I doubt that exceeding recommended dosage is gonna be an issue.I hope this helps, best of luck!