I have 3 fighters in the same position at different weights. None of the divisons are undisputed. Very frustrating.
It will come. It’s pretty realistic to real life in that it’s not just down to ranking position. The champ may be waiting for a unification fight. Or a rematch. I would try and get that IBF ranking up. It is sometimes hard to get a title shot if one of your rankings is so low.
That’s but one perspective. Look at it also from the angle of the champion. There are ways to avoid your guy if he wants to. This is the beauty of boxing and the fun in making this game. No league tables, no rules, just a load of money