Considering your length of experience in the IT service which you have accumulated so far, any shift from the present assignment will spoil your career and in this competitive world, you have to face a lot of inconvenience to show your skills and potentials in the area which you are likely to choose.
Assuming that you are likely join as a lecturer in an Engineering - college on the strength of your qualification, you have to meet the Principals of some private Engineering - colleges and then you have to submit your resume furnishing all your particulars and since you have zero experience in the teaching field, your emoluments would not be attractive. You have to acquire M.Tech with a minimum percentage of 55 so that you may face NET - a test essential to be selected as a lecturer in a Goverment - engineering college. With the passage of time, Ph.D degree has to be secured in order to achieve faster promotion in the teaching line.
The other alternative could be to join a coaching institute to impart coaching to the aspirants intending to clear engineering competitive tests. You need to show your subject command in any one of the subjects such as Physics, Chemistry and Mathematics. After satisfying the interview- board, you may start as a coaching teacher with some respectable emoluments though it may not be higher which you are drawing currently. Again with your consistent performance in your related area, you may get a substantial hike in your pay in future.
Whatever area you choose, you have to make consistent effort to retain your image and hence think of betterment in your present area- by undergoing some advanced training in your area or accept the sponsor - programme provided by the management and in that way, you would have a better openings of promotional - channels in the IT field.