Rapid stupid f***ing weight gain

Lexx

I had both my kiddos within 15 months of each other, my daughter will be 3 in September and my son will be 2 in December. I was overweight when I got pregnant. Lost nearly 40 pounds separately while pregnant with both and since having my son, shoot even since last summer I’ve gained a huge amount of weight. After I had my son I was 191. Last summer I was 245. Now stuck around 270 for months now. I’ve been exercising at least a few times a week, Wright’s and cardio. Eating about 1300 calories a day and making sure I have veggies. Cut out almost all the bad stuff and staying around this weight. I was 266 last week and back to 269 Ish this week. New stretch marks keep appearing and I’m absolutely lost on what to do now!! Please help!!! Any advise is welcome. 😭💕