Going back to work in 2 weeks..

I've had almost 3 months off with my baby and am heading back to work in 2 weeks. I have so many mixed emotions. Mostly worrying about my baby. She will be watched by dad and my MIL.. Only problem is she only wants me. She's not EBF as I supplement with formula. Any advice? She screams when my husband holds her. I'm so worried and am dealing with "mom guilt"... Ugh I know millions of women do it but it's so stressful and scary.. How did you ladies cope & deal with it?? 😫😭😞