I feel overwhelmed and it makes me feel guilty

So essentially childcare has a hefty waitlist out here so me and my husband are pulling opposite shifts. Our oldest is in daycare so no problem there but we’re still waiting for a spot for our youngest. I’m working days so I bring the oldest to daycare, work, meet my husband in the parking lot and take the baby, pick the oldest up, then go home.

My oldest is nearing two so with that comes lots of attitude and the baby prefers to breastfeed so she’ll only eat 10 oz while I’m at work then feed a lot when I get home. I’m finding it incredibly difficult to try and do everything (dinner bath time etc) and I’m getting so overwhelmed I want to cry. I know there’s many women who do this and handle it so well, why can’t I 😭