My elder daughter is also 2 yrs old studying at N1. I'm also a working mom breastfeeding my 5-month old son. I fully understand your concern. It is rather stressed to take care of so many things after work.
You are luckier than me as you got your mom helping you. I only have a maid. My husband come back home very late.
After work, I need to go to the market (to buy the stuff for the next day), spoon feed my daughter and take my own dinner at the same time, take a shower, pump milk, bath my son, and only then can I hug my baby boy. (Don't think my maid is not busy! During that time, she needs to finish her dinner, help me to feed my daughter, prepare for my son's bath, wash the dishes. Then she feeds the baby.)
By then it would be about 8:00 to 8:15pm. I play with my daughter for a while, get her some fruit, shower her and take her to bed. When she falls to sleep at around 9:45pm, I go to pump milk again. Any way, I managed to go to bed at around 10:30pm. What a blessing!
It is fortunate that I never need to pump milk in the middle of the night.
Next day, I wake up at 6:30am to pump milk, prepare breakfast, get dressed and take my daughter to school.
The cycle starts again.....
My time for my baby boy is very limited. But I don't think it would be much better if I do not need to pump milk.
I am used to the above although I sometimes feel tired.