Contributing money to his family is the bare minimum. He’s supposed to do more, in fact he should want/enjoy doing more. I wouldn’t have a second baby with him like you said you know you’ll basically be a single mother of 2 unless it improves.
The amount of money he earns means absolutely nothing if you are both working full-time. You’re both putting in equal hours a day, so baby duties should be split. Yes mama usually is the default parent, but he can do better if he wants more kids.
If you’re both working full time it should be equal! I stay home so I feel resentful also but understand he works and provides for us so I try to make it easy for him when he comes home but man it’s exhausting. This is my third baby but I remember feeling this resentment and I broke down and cried and told him either you help me or we get a divorce you choose. That worked and it’s been better ever since but you have to speak up, men aren’t mind readers.
I experienced JUST THIS with my partner. It was so frustrating and it took me having a mental breakdown for him to fully understand how much I really needed helped. Maybe it would help to start tasking him with things and holding him accountable. For example, bath time, picking up after dinner, having him cook dinner on specific days, etc. My partner needs constant reminders which is frustrating but helps take the load off a bit. I’m sorry mama, I know how hard this is! What also helped with our situation was seeing a couples therapist. I hope this helps a bit 🤍 you are not alone!