Am I contributing to my bill ?

I 100% agree with you. Daycare is incredibly inexpensive and so is formula!

I would leave him with the child and work since he wants to complain

I agree with you. It’s hard for some partners to “get it” because you are putting in a lot of unseen work. If he still disagrees and feels that you should get into the workforce to “contribute”, then maybe suggest y’all sit down as a team to price out daycare and formula. At least that will open up the conversation to figure out a compromise.

Have him find a daycare and get a tuition quote for that. Also, many working moms do breastfeed, so not sure what formula has to do with that, but have him get a cost estimate for that too, I guess. Sit down with him to determine if you'd be able to afford childcare expenses. If it's a matter of not being able to afford expenses on a single income, maybe he does need help. Maybe consider remote work if you don't feel that you guys have enough after bills.

Having someone else care for your baby and use formula instead are definitely big costs. I don’t know where you live but daycare by me is $350 per week and formula would cost $60-$70 per week if you went all formula.

Me and my partner weighed the pros and cons of this together to see if it makes sense for me to go back to work. I think that is the key thing to do is make the decision with the facts together. Making him a part of the choice will hopefully alleviate his questioning

Yes you are.

I definitely think there is a fair trade off!
Being a sahm is a lot of work, and so much better for children.
Babies need their mother and mother's need their baby.
There is a reason moms and babies cry when doing daycare drop offs. I believe daycare is not the answer when both parents are in the picture.

Check out Suzanne venkers podcasts she talks a lot about this subject.

https://youtu.be/NuD6aECYhIY?si=eNt6sHljo6WRrCuq

Staying at home is work and you are contributing! I went to part time so that a nanny wasn’t with our child more than one of us but so that I could maintain my career. We opted for a nanny vs daycare because we just can’t call in sick if she gets sick as often as she might in daycare - and if we did you can bet we’d be taking turns. It just couldn’t all be on me (I’d want to stay him but it’d put my employer in a rough situation). Anyway I have a graduate degree and make a decent wage… yet since we have to pay her for 11 hour compared to my 8 (lunch, drive into work…) almost my whole check goes to her. I agree price out things (ask him to get the quotes) for a better conversation.
Also I breastfeed and yes there is the Pump Act, but your supply might decrease. It’s hard. I feel like we spent a ton on pump supplies too.
Just all things to think about if they might apply to you for a convo