If it were me, I would take the digestive enzymes in quantity two or three times a day on an empty stomach and also massage something topical onto the scar two or three times a day. You can see some suggested items here:
There are several very good digestive enzyme products out there. One of my favorites is Univase Forte,
but I would also include the key enzyme Serrapeptase. I personally use Doctor's Best Serrapeptase which I get from iherb.com If you have never ordered from iherb before you can use my referral code to get $5 off your first order.
The reasons for massaging topical oils or substances into the scar are two-fold. First of all, many of the oils listed have shown to be effective at fading/lessening scars and secondly, massage itself is an effective way to help break up fibrin and scar tissue.