OP - be kind to yourself. I fight the return to work guilt big time but mostly in regards to DD's anxiety and clingyness. Whilst I sometimes day dream about being a SAHM and how much better off we'd all be in reality the pressure on DH would have been too much. So I am helping to maintain my skills and job whilst juggling our home life as well. Some weeks are harder than others but over all we are doing the best we can to meet all our needs.
Hugs to you.