New mom need help

So my baby girl is 2 months old, I have really bad anxiety and I think it doesn't help the baby, she starts crying as soon as my bf leaves for work he work 12 hours so it's alot of me having her, he leaves around 230pm and gets home about 3am. But she crys from about 3 to 11 maybe she sleeps a little bit a hour or two during the day and night she sleep for a couple hours in the morning. I know that I should be doing tummy time more I think that might help but she cry for that too and can't stand it.