Dear Krishna,
Thank you for writing back and following the instructions. However, the practice was not meant to practise deep breathing, rather it was meant for observing or watching the rhythm of breath without interferring with it. Just see the breath - how it goes outside and comes inside - feel the touch of air with the inner wall of the nostrils - feel the temperature of incoming air and outgoing air ( as discussed earlier). I may let you know that my objective is to find out as to whether it is because of breathing practice or simply sitting posture and hence, I will also like to know how you sit in sukhasana and the surface where you sit.
Kindly revert with the feedback after the above mentioned practice as well as posture under which you use to practice pranayama.
Om Shanti!