7 weeks pregnant with my 2nd - if I night wean my 8.5-month-old, will my milk supply go down?

Hello! I’m very early into my second pregnancy, feeling ready to night-wean my almost 9-month-old (we co-sleep and he kind of just finds the boob), but very worried about my milk supply.

I haven’t pumped for months now, so genuinely don’t know how much I’m producing anymore. Before even considering night weaning, I was worried about my supply dipping bc of the pregnancy, but he doesn’t seem frustrated at the boob, or extra hungry? He is also a great eater though and loves his solids, so a little worried he’s filling up on that, whereas primary food source should still be breast milk.

Ack, having mom guilt for getting pregnant again so soon! I l love our nursing journey! And any advice on night weaning while co-sleeping is welcome