How do I tell fiancé I don’t want to marry him?

[Girl001]

Due to get married next year. Had a child nearly 2 years ago. We get along great and he isn’t horrible. I’m just not in love with him anymore. Do you think I should say something or suck it up? I obviously don’t want to hurt him anymore than I will. I’ve lost myself as a person and really want to find myself again since being a mother.

No. It’s so that the split will be based on needs, on childcare arrangements and on the earnings potential basis.

not sure if this is speaking out of turn, but is there a possibility you could have post natal depression? Could you talk to a counsellor they might be able to help you work out where you want to go with your life?

if you have doubts could you postpone the wedding and work out why the doubts are there? They’ll never go away if you are truly not into the relationship and you both deserve happiness

"Get along great" sounds like a good basis for a relationship to me. Men like this are very rare - it may not work out but don't throw it away without giving it all you've got.
The reason you have disconnected is because you don't have quality time together. Set aside quality time (even if you need to take a break from hobbies or other commitments) - it can be dinner together after the kids are in bed, nothing fancy. Talk, or do something you can talk while doing it, like a board game. Do it every week.
Secondly, communicate. Tell him you are feeling so disconnected that you are really worried that your relationship will not last. Lay it on thick if necessary, and make sure he understands that it's make or break, but that you think he's great and you do want to save it. Ask to hold off on the marriage for six months while you two invest time and effort into your relationship.
If you can't do this alone, get counselling. I really really wouldn't leave a relationship with someone you get on great with, without first getting counselling.