I want to take ~100 oz fbm to India for a trip with my baby. Any tips?

Have you check with the airlines of bringing FBM on flight? You would need to calculate the journey of flight and the duration to travel to the airport. Secondly, you would need to get a styrofoam box and get LOTS OF dry ice. Frozen ice pack. Pack it nice and tight. Seal it tight. Probably you need to label it nice and clear on what does it contains in case it needs to be checked by the customs. I hope this helps!