Is there any way to make a belly button shrink or become more round after a tummy tuck? (photo)

Thank you for your picture. Your bellybutton shape looks pretty good. I'm sorry that you're not satisfied.  It is unlikely shape will change to a round shape at this point. Earl Stephenson Jr,MD DDS FACS

Each belly button has a different shape and each surgeon has a different technique to create the new belly button. It is possible that the shape may change as you continue to heal. If you are unhappy with the shape/size of your belly button, make sure to discuss this with your surgeon at your routine post-op visit so he/she can address your concerns and revise it if necessary. 

Best to allow 6 months healing time than consider a minor revision.. But a before posted photo would help. 

The erythema or redness of the scar around the belly button is making the size and shape more conspicuous.Be patient, give it time (months), use scar therapies (silicone patches, mederma) and consult your surgeon.If after one year you are still not satisfied, you may be a candidate for a revision of your belly button.

Many thanks for the question.Its a perfect shape at 6 weeks for the belly botton.A long vertically shpaed belly botton is a sign of yound age while a long horzontally palced  is a sign of older age.I therefore thinking its a very good job and will improve in time.