I’m planning to take my 1 year old on a train from the north of England to northern France. The last time we did a 3 hour journey together she was 5 months old and just entering the wriggly stage, I ended up pacing up and down the aisle with her in a carrier as I couldn’t find a way to sit down safely with her. Wondering if anybody has any advice on how to travel safely on a train with a 1 year old and whether there are any booster type seats people have used successfully on trains?