Yes this would be a large dose. It would be very helpful to know what version of humalog this is such as 75/25 and what your weight is as well as your average blood sugars. Your dosing schedule would also be helpful.
There are immediate acting forms of insulin and delayed acting forms. The most immediate acting form is just called humalog and this would be too high of a dose for this as it might cause hypoglycemia. The dose would be more appropriate for 75/25 mix which is mainly long acting. This would be a dose suitable for a heavy person with a fairly heavy intake of carbs or por control... The details would be most helpful as to evaluating your dose...
The Lantus is a long acting insulin while the Humalog is short acting. It is a large dose that you are on. It seems to me that you need to work on your diet and weight and the exercise aspect of your treatment probably needs more emphasis. You want to control your blood sugars to less than 150 (fasting numbers) if possible.
I hope this helps. Let me know if you have further questions. I will be happy to get back with you. Best regards,
Anthony Bray MD