When can I sleep on my belly after an explant and lift?

Best to clarify your plastic surgeon's recommendations directly, asking his/her rationale behind the recommendations. In my practice, I ask patients to avoid sleeping on their abdomens for at least 2 to 3 months after breast lifting surgery to avoid pressure directly on the incision lines. Generally, sleeping on the sides is allowed 2-3 weeks after surgery. Best wishes.

Thank you for your question.  As you have discovered, positioning is difficult with combined procedures.  Discuss your concerns with your surgeon.

After
breast implant revision or removal surgery, I advise the patients to take one week off from work.
At that point we take out their stitches and drains.  The patients may return to work, but may not engage in any
strenuous activity. At one month, the patients start to wear a soft cup
bra with no underwire and can start low impact cardio. This is when it is safe to sleep on your side or belly.  At two months they
can wear an underwire bra and engage in more strenuous physical activity.