9m baby breastfeeding and wanting to get pregnant

I struggled to get to this point but I’m in such a good place with my 9 month old and breastfeeding! I was wondering if I should wean him at 1 year or continue to feed him?

Will it be harder to wean as he gets older- because I don’t want him to be 1 and a half or 2 years and still nursing him (mainly because I want to try for a second baby and be able to sleep / rest in the night without feeding him - as pregnancy was really hard for me with morning sickness for the first entire 3 months - and he still wakes up for night feeds which I’ve tried to wean him off but struggle to do so)

I’m sooo in love with this journey, and I love feeding him so much! Mama’s, who fed their first while pregnant and when the new baby came, any tips or advice?