Postpartum body

I’m 9 weeks postpartum today. I gained around 50lbs while pregnant and have only lost around 18 lbs because I’ve been careful with my diet and have been exercising. This was my 5th pregnancy so I know it takes time to lose the baby weight but it’s so hard to not fit into anything. With my previous pregnancies I gained the same amount but I lost 20lbs immediately after delivery and was able to lose the remainder of the weight by 6-8 months postpartum. I’m feeling like this time it’s going to take longer and I’m already frustrated.