I assume you've already seen this chart thing?
Does "receive magic attack from monster" make your seed grow? I never tried it but remember people saying it didn't work so idk. :/ Using elemental attack is probably not a good idea since it says its really slow and you'll probably crit and that will just add more to sense? D: Who knows how many TM levels you would have to gain and then it might just go in charm(?).... but I guess you could maybe gain a few TM levels(with daily quests so you don't add anything else? lol) to get some magic empathy up and then MP pot some more and just hope that your magic goes up before your sense does? If TM up will even work past 3. ._. I'm really tired so if there is some really obvious flaw in that plan or it made no sense sorry. >_>
I made sorta the same mistake with my guardian and just ended up putting another point into sense. ): I know this won't help you but maybe it will help someone else, you should have done some of the "exchange" thing with daily coupons before you got magic to 3.