How the heck does this work when a second child comes??

I’m a SAHM and I’m primary caregiver for our baby because my husband has a stressful sales job with extremely long hours. He does WFH and he tries to pop in and help for short moments when he can, and he hangs out with baby in the evenings when he’s free so I can eat dinner and shower, but otherwise I handle mornings and all other evening baby care.

I do all naos and bedtime because she is EBF and feeds to sleep, I do all diaper changes because we do EC and long story short she will only go with me and also expects to potty during every diaper change, I do all cooking and feeding of baby, I do all baths, all while also trying to keep a household running. Even on the weekends I do these duties because we tend to follow our weekly rhythm which is with me doing all these things, because my daughter has a very strong preference for me (understandably because I’m the one caring for her 90% of the time). That means when dad steps in he is usually just hanging out with her to entertain her or maybe help with feeding her when I’ve already gotten everything set up.

Our child is 10 months old and ideally we would like to have 1 or two more kids. My husband wants to aim for a 2 year age gap since he believes this is best for them to be able to grow up playing with each other and being able to relate but I’m pushing more for a 3+ age gap because I feel that my daughter still needs me SO much and I cannot imagine having to care for a newborn while also being able to meet all her needs.

I’m imagining getting pregnant in 5 months and which would be the timing for a 2 year age gap and literally it sends shivers of stress through my body. I’m like 0% ready for that right now. But I do want a second child eventually and I worry about never feeling ready. Does it get easier as they get older? Will there come a time when she doesn’t need my one on one attention and physical help as much?

I truly can’t imagine right now being able to care for her fully even without a second child but just with the disability that comes from being pregnant (morning sickness, fatigue, physical discomfort, etc) especially because she is pulling to stand on everything right now so I’m constantly watching her for safety but also needing to carry her around all the time and she’s already so heavy!