ok. now I'm confused

I take 30/70 twice a day(38 and 32) + metformin 1/2 pill twice as well. my sugars are between 4.3-5.7 before meal and 2 hr after. I eat about 2 sl. of w.w. bread daily+veg+proteins(4 meals a day, small portions) drink plenty of water+decaf green tea. 1/2 banana + 1/2 GS apple a day.
Should I be looking into changing type of inculin?
Thanks