Can I travel with my 28 days old baby in a train with AC compartment for 2 days and 2 night long journey?

Presently the baby is healthy and on mother's feed.

yes u can :) prepare yourself for one grumpyass baby though as babies dont like to be unsettled and you will be cooped up with him/her so u might get irritable also!
goodluck!!!

SURE! I would get a good sling- like an over the shoulder baby holder, because walking on the train with baby in arms will be quite a challenge. Also the bathroom! So a good Ring Sling is best because it's easy on and off in tight spaces. I would also take your nursing pillow (boppy or whatever) because it can be used in so many ways. When you get on the train ask the person that is like the stewardess- tell them that you are going to need some assistance with the making of the beds and with meals. They will get your tray for you, and they will come in and set up your bed with sheets and every thing! I've done the train with a kid! Take a good book too. You will be board. Take a camera, the pictures will be good for the memory book and all the family.