I'm expecting baby 2 and have a car with only 2 seats in the back. With dd1 I used my matrix in the lie flat position until she was about 6 months, but this time we won't be able to at all - Does anyone know if you can use the matrix in the sitting up position for a new born/ and if not - what's the earliest it's safe to put them in that position? Can't find my instructions and can't buy another car! Do I need to buy a new car seat?!
ta
babylily