Rite O Cef CV Dry Syrup

My mother age 55, had a severe brain stroke (left side) on 11th December, 2016. 26 days she was in dept coma. Now she is recovering slowly. Now she can eat liquid rice, cerelac and fruits. Present condition is right side hemiplegia with aphasia syndrome. Current medicines: Amlodac 5, Atorlip 10, Topsid 40, Bionerve syrup, D-Wall AQ 1/week, Levipil 500 tds. Medication: Physiotherapy manually and using nerve stimulator. Doctor is telling not to wear catheter as there is a chance of urine infection. I have changed in every 21 days interval. But using diaper is now really too costly for me and using bedpan not controlling the urine. How can i manage urine now as it's a prolong treatment you know.