I'm new friends please :) anyone w/ scoliosis rods working o

hello, I just joined yesterday and what an eye opener seeing all the calories and bad food I eat. I'm working on it, had to go out and buy new groceries lol. The food and working out is difficult but I'm committed! (Need friends to help so add me please!) other issue is I have scoliosis and had my spine fused with Harrington rods in 1990 so my flexibility isn't so great. My trouble area is my tummy and I cant do sit ups, any suggestions???? Thanks