Hi, as u said u have already taken Physio treatment, but u have not written how many sessions, and as an it professional u need to strengthen Ur whole back
Next Steps
U need to modify Ur workplace, that is called ergonomic like increase ur height of ur desktop so that u will look straight , it should be above the level of ur eyes around 10-15 degrees and elbow wrist should be well placed on something , kind of a support , and ask the physio for postural exercise
Health Tips
and get up from Ur chair every 30-45 min and walk few steps than set again