[Heaven's Night]

Yes it is possible. Only do it one side. However, as TCP tends to help fix breast atrhopy, your now lagging one might end up not just bigger, much more mature looking, so you may end up doing the same on the other side too. But yes topicals can be aimed, even at specific areas which does work to some extent. I have noticed this when I added dermarolling as a preparation, I rolled a whole lot in the areas i wanted to target and those have filled in really well. 

I have shfted the area to focus on several times, currently its my areoalas and immediate surrounding area as I restarted cayenne extract with BO and dropped RC extract dose in half, but use it only on and around areola. Mainly this is about saving something as everything costs a pretty penny, but the effect is obvious as my areolas have widened. 

Also, you should do a lot of massage on the breast that's lagging behind, better blood flow and heat helps.