New here looking for Help

Hello My name is Jessie, I haven't been here in a really long time, I had a baby back in November and gained 26 pounds with him, now making me 30 pounds from my goal, I am having a really hard time trying to get back on track, should I restart atkins? I have gotten used to carbs again while being pregnant with the baby, and after he was born he had a lot of problems and was in and out of the hospitals so I had lived off of hospital food for weeks, He will now be 5 months old this week and there is no more excuse for me not to start getting back on top of things. I am a over a year post op, I will be 2 years post on May 12th I would love to be close to my goal till then, I feel like such a failure I was 302 at the start then I was down to 165 pre pregnancy and now I am back to 185 My goal is to be 150. If I restart the atkins is it 2 weeks all protein and then 25 grams of carbs? Anything that can help would be greatly welcomed. Jessie