My System has a carrycot to attatch too so i dont have that worry.
Couple of options.....maybe take a baby sling too and break up how she travels on the days out with that?
How far back does the normal seat bit go?? mine goes back practically flat and if she will be 3 months then? would that be ok?
Also its only for a hol/temp.
Maybe you could ask your midwife or health visitor when bubs is here to see what they say?
