I can only speak generally about working from home- I did it for years with toddlers but it was not customer service. The short answer is that I ended up doing 2 days of day care and worked my schedule around that until they got older. I also worked some evenings and a few weekends.
It can work! Just takes a lot of adjusting. And the end result of being home with your kids as much as possible is totally worth it, IMHO.
My suggestions are: make a specific place your working space, keep to specific times, put on a 'work shirt!' - sounds odd but helps change your mindset... do your best to separate work from home. It sounds impossible but I did it for 10 years, and then again since March 2020. I love it. And it does get easier, I promise.