Girls, I think my belly is too big for my due date (comparing it to my…

Girls, I think my belly is too big for my due date (comparing it to my first pregnancy). The thing is that I got pregnant when my baby was 4-5 months old, so I haven't even had time to get back in shape and restore my figure. Plus, I already gained 10kg. Every day it gets harder to walk, the belly interferes, clothes don't fit most of the time. And I still have to go for another 3 months ? Who has a big belly, how did you cope? Were there any restrictions on food intake, and generally speaking, did they say that the more weight you gain, the harder it is to give birth?