I think we have to rehome our animals

I want to start by saying, this is not our animals fault. They are genuinely great animals. We worked really hard before we had kids to make sure that they would be a good dog/cat and I love them. But we have 2 kids now and I just found out that I'm pregnant again (surprise) and my husband is about to be gone for a year. My animals are continuously getting the short end of the stick with my patience, my attention, and my care.

I feel awful for them at the end of the day when I realize their water has been empty for who knows how long and they just want someone to sit down and pet them. But I can't. I have to catch up on laundry, do the dishes, put a mask and gloves on to clean the litter box for the first time in a 3 days. My sister has taken the dog on more walks than I have in the last month than I have and I can't keep asking her to do that. I have not cleaned up the backyard in 2wks. The cat needs someone to play with her, she misses her sister that passed unexpectedly a year ago.

I love them and it absolutely breaks my heart to even consider this option.... but I also love them so much I don't want to be so busy trying to keep my kids and myself alive that I neglect my pets. I don't even know how I would go about rehoming them because I know I would be second guessing everyone. These animals are a part of our family. I don't know what to do to he honest...

Edit: Thank you everyone for your suggestions! I really do appreciate it. I am going to see what we can do about outsourcing or automating some of the care tasks for the animals and for the home and really try to make this work. I do love my animals. They have been with us through so much. They are just such amazing pets, I don't want my negligence to give them issues later on. Regardless of how all of this plays out in the end, they will not go to the shelter, I will do the leg work of finding good homes if it comes to that.