Yeah, I thought so too. It is my belief that it had passed way more time (at least a year or two) since we've seen some seasons turning around every now and then. So visually we can kinda inference some time has passed.
Aaaannd, I will admit, this author loves the sudden romance trope. Read Unromantic Romance or Tattoed Love and you'll notice.
It probably doesn't have passed that much time concidering baby girl wouldn't be able to have a name for tht long. I remembered in the first couple of chapters it said that baby girl needed to have a name withing 3 months? So they couldn't be together longer than that, I guess
Guess it's time to reread
They're cute and all and I'm happy but doesn't it feel a bit too fast? Like how long are they together? Like three months? Baby barely did grow a centimeter and even if she's smol for her age babies at that point are sprouting. Definitely can't be longer than a year or half of that.