There is no established schedule for past life regression, because there is no body of research defining a correct frequency the way there is for some forms of therapy. What practitioners offer instead are rules of thumb shaped by experience, and these are worth understanding for what they are: practical guidance rather than evidence-based protocols.
A common suggestion is to leave at least four to six weeks between sessions. The reasoning given is that a person needs time to absorb and reflect on what came up before returning. Whatever one believes about the scenes themselves, the underlying point is reasonable. Any emotionally vivid experience benefits from time to settle, and rushing from one intense session to the next can leave a person stirred up rather than steadied. Spacing sessions is sensible for the same plain reasons that spacing out any demanding emotional work tends to be.
Some practitioners describe an initial phase of monthly sessions followed by a shift to quarterly or annual visits. This pattern is built on convention and individual preference, not on any demonstrated optimal rhythm. A person who finds the sessions calming and reflective might enjoy them regularly; a person who finds them draining might prefer them rarely or not at all. Neither choice is more correct in any verifiable sense.
How much someone takes from a single session, and how unsettled they feel afterward, reasonably affects timing. A light, pleasant session may need little recovery, while one that stirs grief or anxiety may call for a longer pause and, sometimes, real support from a counselor or trusted people. This is ordinary self-care around an emotionally charged activity, not a special property of regression.
Claims that an inner wisdom or divine timing dictates when to return are beliefs rather than findings, and a person is free to hold them while recognizing they are not a guide anyone can verify. In practice, life circumstances, curiosity, and how the last session felt are the honest drivers of when someone books another.
More sessions, notably, do not promise more benefit. Regression is best understood as a reflective experience, and like any such practice, its value does not scale simply with repetition. Some people are content with a single session; others return occasionally over years. For anyone using regression to cope with a real difficulty, frequency is the wrong lever to focus on, since the practice is not a treatment, and persistent distress is better met with care that has actual support behind it.