Dreading taking baby on train tomorrow any tips?

hello I'm doing a 2 hour journey tomorrow from Tamworth to Leeds spending the weekend up there. I'm taking my two week old and his car seat and chassis And just the one bag.

im absolutely dreading how this is going to turn out! I'm thinking of just getting the pushchair on there and folding it and storing it away in the luggage area.

how do I go about getting of if there is a huge gap? My pram only has one wheel st the front so could see this going horribly wrong.

have attached a picture 

xx