Young Mother just getting started

Ive just started my diet and excersise program a week ago as I am down to my last 10 lbs. I started at 185 after having my last child, if you can believe it. Im now down to 135 though its taken me three years to get there. Its not really important that I lose the 10 lbs and am 125lbs, but more that I reach the size I want. Its difficult keeping myself on track sometimes though as Im usually doing it by myself and I find that a partner helps with the process. Hoping to find others on here lookin for the same thing that can also help me reach my goals as well. currently, I keep a 1200 to 1300 calorie intake a day, as well as a 20 minutes cardio fat burner video 4x's a week with 3 days of 20 to 30 minutes of light weights as well. I walk about 4 miles a day five days a week, I dont have strong knees so Ive been working up to running. I try to stay on with my plan but sometimes I need a little push to get me going. Any help or suggestions would be appreciated.