I didnt want to mention about that subject.. but I see thats very important as I experience similiar problems..
controlling bowel movement is a key for diabetes in order to keep sugar level fix.. a full bowel will always increase your sugar level..
and not only it increases sugar level , if it slows and stops which elderly people face, death is inevitable..
so what helps bowel movement ? exercise (and there are some kinds of exercises that helps more to bowels), consuming food, based on
high fiber like vegetables, drinking enough water (thats also critical in summer, it also protects your kidneys) , regular times to eat and
visits to rest house

and if all doesnt help you may need laxatives to a degree (but be careful you cant use them everyday)
also resting and sleeping whole day is a definite no no for controlling bowels (especially for older people) ..
one critical point is that even in type 2 diabetes you may need insulin injections .. your body strength mey reduce to a critical point so that you cant push and force.. at that point you need insuline and someone to open the bowels artifically (by hand) .. I experienced that with a relative that summer.. and we had very hard times.. so if you face a similiar problem please dont hesitate to ask help.. because you may face huge problems if you are late..
also if you are having infection on pancreas area (which you may hardly know) pancreas may decrease working which lowers your insuline dramatically.. also in that case you may need intravenous liquid food mixtures which is a complicated process ..
ps: also one can encounter other problems if there is a grown prostate blocking the exit way..