I had exactly the same plan last year. Passed level 2 during pregnancy, thought I would have plenty time with a newborn (how naive I was). The lack of sleep had a direct impact on how many times I read one sentence. I sat in the exam when baby was six months old but failed, I was just glad that I could pump during lunch break and didn’t get infection, lol.
I’m kinda happy that the exams were cancelled this summer due to COVID19, so I didn’t need to prepare for the exam again this year, but I’m planning to sit in the 2021 exam.
If I can go back in time I would tell myself: relax, enjoy the baby, don’t worry about the exam, it will still be there after a year or two, but the baby grows, cherish the little human and spend more time with him / her when you can.