Based on the information available, there is no universally recommended waiting period for increasing Lipitor (atorvastatin) dosage. The appropriate dosage can vary depending on several factors, including the patient's current lipid levels, overall health, potential drug interactions, and the presence of certain medical conditions [1].

Typically, healthcare providers start Lipitor therapy at a lower dose, such as 10 or 20 mg per day, and then adjust the dosage based on the patient's response to treatment and lipid levels [1]. According to the Lipitor prescribing information, the dosage can be increased at intervals of 4 weeks or more [2]. However, it is essential to consult a healthcare professional for personalized advice, as they can evaluate the patient's condition and determine the most appropriate dosage regimen.

In summary, the recommended waiting period for increasing Lipitor dosage can vary, and it is best to consult a healthcare provider for personalized guidance.

Sources:
[1] Lipitor (atorvastatin) tablets, for oral use [Prescribing Information]. Pfizer Labs. 2016. Available at: <https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/020768s053lbl.pdf>.
[2] DrugPatentWatch.com. Lipitor (atorvastatin) Patent Expiration & Generics. Available at: <https://www.drugpatentwatch.com/patent/lipitor-atorvastatin/>.