The "normal" bonce back time for full recovery from an Ironman is 4 - 6 weeks. So, you are definately passed this point now if you are still feeling run down. Keep in mind that it is the middle of the off season and that it is OK to not feel at your best.
Every Ironman race that I ever did, was an all-out affair and I was in rough shape for about 2 weeks after. Typically I would do no running other than a very light jog for the first two weeks. Quads were usually so badly hammered, that walking was a challenge for the first week. Sleep, despite severe fatigue was irregular. Althuogh, I atribute some of this to the all-out partying that went on after most of my Ironman races!! Work hard. Play hard. Party Harder.
9 weeks out, if you still feel very run down - I would suggest that you go see a doctor and have some blood work done. Perhaps you are low in Iron or some other biochemical or physiological area.
Steve Fleck @stevefleck | Blog