Needing advice about juggling it all

My son is 3 1/2 years old. My daughter is 7 1/2 months old. I’ve recently started working a full time day job. My children have started going to daycare and all is well for the most part. The main thing im struggling with is routine. Like how do you have the energy to bath the kids every other night? Especially when one of them hates? And do dinner and pump? And clean? I’ve been trying to meal prep but I’m still adjusting to it. What do you guys like to meal prep? Break lunch dinner. All of it. Thank you all!