How to juggle work and take care baby together

Hi mummies, Im glad that my boss allow me to work from home still after my maternity leave. However, I am taking care baby at the same time. At times, i looking at my new born i feel sorry to her that i couldnt giv her my full attention. i feel so sad and useless that i cant give her the best. i couldnt be full time mom as we are not a very rich family and there are alot of commitments. i am not willing to send her to infant care yet. i am so lost everyday.. ☹️