Blood sugar jump when starting Chemo - Dexamethasone

I started Chemo today (Taxotere). I am borderline diabetic, currently taking nothing to control the T2 diabetes per my PCP's recommendation. Diet and exercise have worked very well in the past, but it is very hard as my PC progresses, and I have always hated Metformin the 2 times I tried it.
As part of the pre-chemo treatment, I was given Dexamethasone to take before and after the infusion. This is primarily to help control possible swelling issues. I have used DEX in the past with phenomenal results for the cancer pain to my bone mets, but that was almost 4 yrs ago.
Today, my blood checks both showed a glucose reading of 370, while I would normally be 140 to 160. By nightfall, just prior to taking my second and last DEX pills for this cycle, I was at 192.
For now, we haven't adjusted treatment in any way, but will be doing more monitoring and a little more strictness to the diet/exercise thing. Fortunately, I feel so good on the DEX, that is a pleasure.
No real question here; I am just throwing it out there as I didn't see much in other threads about this particular issue and maybe it will help someone else.

Just a followup...pretty much back to normal by Sunday morning after Thursday's wild rise. BS back below 150. While I did continue to manage my sugar and carb intake, I can't say I did much different than before to hasten the change. I feel very good now with little in the way of chemo SE, but sad that the wonderful pain relief from the DEXA is basically worn off. You can bet your bippee I am going to plan on two magnificent days of enjoying life next time I get the DEXA for the 2nd infusion in 3 weeks.

DEX is a standard part of the med package before and after chemo.. And yes, it's a feel good drug..But it's not recommended for long term use. They use PRED for that..Is your chemo Docetaxel ? Watch out for nuropathy in your hands and feet. Feels like your feet are going to sleep but they don't wake up..After the second treatment, I lost my hair..