I just want to see if my thinking here is sensible. Note: I'm in the UK, where they're prioritising getting first doses into as many people as possible, so (rightly or wrongly) second doses are 11-12 weeks later.

I have insulin-controlled gestational diabetes, which puts some women into the "clinically extremely vulnerable" category and gives them priority for vaccination. The algorithm is weighted by age, and I'm 41, so that's me. So I've been invited for my first dose of the Pfizer vaccine when I'll be 29 3. I'm planning on accepting because I understand there's some evidence that antibodies will cross the placenta and afford my baby some immunity. I know there's no evidence that the vaccine will cause any harm (particularly later in gestation when concerns about raised temperature are no longer relevant), but is there anything we can extrapolate from other, similar vaccines? Or is this RNA thing a total unknown?

I'm currently scheduled for a c-section on my due date, and my second dose will fall 7 days pp. I think this could be a good thing because my toddler is still nursing, but I currently have little supply. I'm hoping that by having the second dose after my milk has come in, I'll also be able to pass some immunity to my older child. Does this line of thinking make sense, or would you try to push for a second dose before delivery? (I don't know if that's even a possibility, but I could always try. If I was able to get the second dose earlier, it would be a difference of days not weeks, so it wouldn't change to being on Pfizer's recommended schedule or anything close to it. That's just not the way they're doing it here.)

I actually said to my husband that this would be my ideal scenario (first dose while pregnant, second dose pp, so as to hopefully give both my babies some immunity), but of course now it's on the table I'm immediately second-guessing myself.

I'm seeing my obstetric consultant before the vaccine, so will obviously run all this past her as well. But in the meantime I'd love to hear your thoughts.