When I diabetic has to cut medicine, what is a good replacement regimen?

I am 20 y/o and on my parents insurance right now. I have type 2 diabetes. I am getting married here soon with my pregnant g/f, my job doesn't offer good enough health care. Right now I am taking 1,000mg of Metformin in the morning and again in the evening. I know I won't be able to afford $40 extra /month, what would a good regimen be for a sufficient replacement? Any advice is appreciated, ty