You need to have a serious conversation with your partner, I have a 3 year old and a 14 week old baby, and I dont feel like this in the slightest. My partner is up at 5am and gets home at 3.30pm and when he's home he's in dad mode, hands on. On weekends of I ever feel like I need some time to myself which is rare now but I did in the beginning as it was hard with a newborn and toddler he would take both kids out for the day or just our toddler so i coukd just sleep. What hours does your partner work? Even if you are a SAHM that doesn't give your partner the right to do the bare minimum and just take naps when he wants whwn you're exhausted and can't even shower! He needs to step up you're both parents
I will be honest it takes time to get better. I have a 2 and half year old I remember feeling like I got a little more space and could breathe when she was about 6 months. I did have to have a conversation with my Fiance about needing to be able to have a little me time (showering, taking a nap and things like that) I will say after the conversation it got better. Then it slowly goes back to how it was and I have to bring it up again. It’s ok to voice your needs. You having needs doesn’t mean you don’t love your baby. I just try to remember that I can’t fill from and empty cup.