The telling part of practice was summed up by a violinist, that I heard on the radio, who stated... "If I don't practice for one day.... I can tell the diffrence. If I miss 2 days... My accompanist can tell the diffrence. If I miss 3 days... the audience can tell."

Granted this was somebody at the top of their game, but none the less it is an insightful discription of how important practice is. The good news is that it will come back if you can once again devote the time to practice.