Weaning toddler while pregnant/child-led weaning question

Hi all,

I still nurse my 2.5yr old and am 17weeks pregnant.

Pre-pregnancy he still nursed 2-4x/day but dropped to 1-2x since. Yesterday at bedtime he took one "sip" and said he was all done and tonight he didn't nurse at all.

Just wondering if anyone would share their experience with child-led weaning. I assume this is weaning but is this it?

I love that I surpassed my 2 year goal and know that G-d willing I will be nursing a toddler soon but it makes me sad if the last time I ever nursed my son already happened and I didn't realize it was the last time...

Or might it be on and off for a while longer? don't know if since he seems ready I should tell him it is all done or try to redirect him if he does ask again? Or just go with it?

So hard not to feel emotional about it!