Approximately how many months is the checkup cycle after implant surgery?

It's been quite some time since I had the implant procedure. During that time, I had a follow-up checkup once, and the doctor took an x-ray to check the condition, observed my mouth once, and told me to come back in six months. I'm wondering if this is enough for follow-up care after the implant procedure, so I'm going to ask a question. The doctor in charge didn't give me a clear answer, so I'm very curious.