All will return with regular practice, but it occurs to me more and more lately that the older I get, the less true this will be. I need to remain firm in my commitment now if I'm going to navigate the progressive difficulties of aging with ease when the time comes. But I'm also trying not to be too hard on myself, even in the face of blatant neglect. Take it from a long-time equestrian: we all get bucked off once in a while. The important thing is to know how to fall, brush off the dirt, and get back on. This is important not just for the rider; it is essential for the horse, too, to know the rider can't be shaken.
A horse can be ruined by a rider who quits. To be honest, I'm not totally sure how the extension of this metaphor applies to the practice of yoga. Maybe the horse is samskara, or the dharma. Or maybe the horse is one's personal concept of the practice, with all its cumbersome associations. If we indulge the horse, then it will rear its head with aversion when we approach. We must remain firm but gentle to quiet the animal and gain its respect. And we must work harder, with even more presence and diligence if we cannot work with it every day.
So, yeah... Back on the horse. Riding out the rough spots. Feeling more in tune with it every day.