Normal testosterone levels
Normal testosterone levels range from 300 to 1,000. Your level of 246 is just below normal. However, if your normal level were 800 to 1000, even a drop to 400 to 500 (which is still within normal limits) could cause symptoms, so a drop to below normal could almost certainly lead to problems. If, on the other hand, your normal were 300 to 400, a drop to 246 would most likely not be very noticeable.
As men age, testosterone levels generally decrease. Perhaps this is what is happening to you, and your body may simply need time to adjust. However, with treatment, the testosterone level should have risen; yours has not. Return to your doctor to discuss the next step, since current treatment clearly is not working.
Your doctor may choose to switch you to an injectable testosterone or refer you to a urologist or endocrinologist for further testing to find out why your levels have dropped below normal. The specialist will probably order more sensitive tests to check your testosterone level, as well as check for pituitary or testicular abnormalities.