How soon can I do plank exercises and ab work after TT? I'm almost 8 wks post op.

You should be just fine, 8 weeks after your tummy tuck, doing abdominal workouts. Definitely, start off easy, and then progress slowly over the next few weeks.  You don't want to overdo it. After 4-6 weeks, depending on the patient, we allow our tummy tuck patients to return to normal pre-operative activities. 

Thank you for your question and congratulations on your recent surgery. Most patients are cleared to perform abdominal exercises six weeks following a tummy tuck. It is best to have an in-person examination with your plastic surgeon for recommendations regarding what you should and should not be doing. Good luck with your recovery.