Diabetes Mellitus Type 2. Bs as earlier.

I am having Diabetes Type 2 since last 11 years. I am 69 years old Male. I continued to have HbA1c around 6.5, fasting bs around 120 mg/dl, Pp around 150 mg/dl I am taking Gluconorm SR 1 g & Pioz 0.5 each tab  once daily before breakfast. But due to movement restrictions due to current pandemic my habit of daily walking around 3500 + steps & 30/40 min pranayam suffered a set back and now the fasting bs is around 160 mg/dl and PP is around 180 mg/dl, and HbA1c is 7.4% for around last 2 months . My eating: 1) Warm water 1 glass and Tea ( with Sugar free globule) 1 cup 2)Break fast :MasaLa Oats 1/4 bowl ( 75 gm) 3) Lunch: Wheat Roti 3 nod, veg, pulse , chicken/fish ( small quantity) 4) Evening Tea with little snax 5) Dinner 2 wheat Roti's, veg, pulse, any non veg if available( small quantity) Though I have again commenced my walking activities but the b sugar is not coming down. Kindly advice how to bring down the bs as earlier. Regards, Sujoy Palit Pune