With Ketu presently transiting your second house of finance, it is not a good period to change into business. The second house is the house of finance, money saved, and earnings. When Ketu comes into the second house, there will be less of appreciation, gains, and recognition. Astrologically this is not a period of taking risks on the money front. Hence you should continue with your job.
Doing the remedies of Ketu will be very beneficial.