Working mum guilt

[Apple35]

Hi. Looking for some advice on work / life balance. I have a one year old and was working 27 hours over 3 days. Saw a promotion going at work which was full time (37.5 hours) so went for that which started at the start of January.
I find it hard as I feel like I am fitting my daughter around my work instead of the other way around. Can't reduce my hours at this job but could easily head back to my previous job but don't want to miss out in the opportunity.
Been restarted on my antidepressants as still have PND. I feel guilty for working full time and feel I won't get this time back.
Really stuck on what to do. I maybe need to realise that my priorities have changed now but my job has always been a large part of my identity. But also feel that I am replaceable at work but not at home.
Any advice appreciated. TIA x

It is hard I went back full time when dd was 4mnths I have a childminder 4 days and I work a 9 day fortnight. Myself and husband share the Monday's off. I really struggled with mum guilt and still do occasionally but it does help that I can see she loves going to childminders.. and gets loads more interaction on things and with people that I know I wouldn't be able to give. It's hard but what time I have with her I love it and make the most of it.. I know I'd of been rubbish staying home with her .. but I know she's happy

I think this might be the depression talking. I felt like this with my PNA when I went back to work full time - the fact was DS loved nursery and probably loved being with me more afterwards because I was happier with a bit of a change of scenary from him.

Ultimately we have to do what we have to do. Think of the positives of working full time - you’ll build your pension pot faster, you will have more money to spend on dc, and you will have access to colleague interaction that could really help with pnd.