eyes on health - newbie possible diet control?

[Wendy&Tiggy(GA)]

Newbie StokLor (Lori) recently changed food on her cat Thurmond to wet and also started testing. He is mainly staying under 200 even though he is not yet on insulin. She is asking if he should go on insulin this weekend.

http://felinediabetes.com/FDMB/viewtopic.php?f=28&t=88560