The Indian golfer tore a ligament in his wrist last year, he returned after a two month recuperation period, but has since missed the cut in the last three tournaments he has played in.
Bhullar said: "I was playing very well until September when the wrist injury happened. The injury had a major impact on my game and I wasn't at my best from there on.
"It's been a tough phase of my career. It's been frustrating and my patience has been tested. I've almost recovered from the ligament tear injury now and there is not as much pain as I had earlier. Fortunately, I didn't need to alter my swing."
Bhullar also expressed delight for compatriot Anirban Lahiri, who has won the Malaysian Open and the Hero Indian Open in recent weeks.
He said: "Anirban's recent successes are the best thing to happen to Indian golf. We needed someone in the top-50 for the game to grow further in the country.
"I'm very happy for him since we've played a lot together since our junior days. I'm confident India will produce many more champions in the coming years."