A young male 37 years diabetic since 9 years, initially on oral medication for 5 years. Taking insulin R 32 unit in morning evening with oral Glimipride 2 mg, Metformin 500 mg, Pioglitazone 15 mg before lunch and Vildagliptin, Metformin 50/1000 morning evening. His HbA1c level was 5.6 months back but now is 8.

Now he is presented with 40 unit regular insulin still blood sugar 341, 226 pre-meal post-meal 228 fasting and not controlled. What should be next line of treatment?