Answer:
(1 month) They're digestive system isn't the best so the have to drink from the mother(Or a type of formula)
(2-3 months) At this age most baby's are able to lay on they're bellies without getting spitting up.
(4-5 months) The baby by this time is either crawling or is learning how to crawl!
(6-7 months) The baby could be learning how to walk.
(8-9 months) The baby has learned how to walk at this point (Careful cause they are still a little wobbly!)
(10-11 months) The baby is trying to say his/her first words! They are learning how to run a little as well.
(1 year) The baby is a little runner. Running around trying to talk! They can only say a couple of words! But they are babbling like crazy and getting into everything!
Explanation:
I hope this helps let me know if it doesn't or if it doesn't I have a lil sis and I watched her grow up and my momma taught me a whole bunch about her so I hope this helps! Like I said let me know!