Down as maternity leave ends - separation anxiety with baby

Just a little rant as my maternity leave has ended and ill be back working tomorrow onwards. My baby’s in ifc, and i feel so down and bad for my baby as ill be fetching me later than usual 😣 like almost coming to 7pm when during maternity leave i always fetch him latest by 5pm. I feel like a bad mon. And my baby’s life will mostly be in IFC. I don’t why i always feel like crying when thinking about it. I did try to clear my remaining AL, so called extend my maternity leave, but due to manpower my leave was rejected. Just wanted to spend more time with baby as i feel by the time i fetch him from ifc, already evening, after shower and milk he’ll go to sleep straight till next morning. Like i only have few hrs with him in a day. Is this just a first time mum syndrome ? Will this feeling tone down or go away soon?