I understand. I went back to work when my daughter was 6 months old. I worked 4 full days... So I did get 1 extra day with her but I felt like I missed so much. I got home at 5 pm and between dinner and a bath (not every night) that was the entire evening... I got home at 5 and had to put my baby to bed at 7 (sometimes I tried to keep her up until 730 but she was ususally tired and wanted to go to bed)
Working and having a young child is very difficult. I would suggest that you cherish the limited time that you have with your baby. Dont spend your evenings trying to clean the house or run errands. I ran errands after she went to bed. You are a teacher so you will have many days off- winter break, easter break and then the extended summer break.
I had a second child and I decided to quit my job to stay home. I am much happier being home with the kids than working to pay someone to take care of them.
You might consider taking a year off from teaching next year. If you can afford it - spend all the time you can with the baby while she is a baby they grow up so incedibly fast.