you have 5 weeks ? to sort yourself out:
make an appointment with a solicitor
decide where you are going to live - do you rent or is the home mortgaged, if it is mortgaged can you afford to buy him out / can he afford to buy you out
otherwise are you finding yourself a rental ?
you could be in a new rental in the next 5 weeks - do you have the money for a deposit / the first months rent in advance
you can apply for a divorce online, this can easily be done in the 5 weeks you have
the Government website talks you through all the stages https://www.gov.uk/divorce
what about the child ? is he likely to want 50/50 ? can he do 50/50 if he goes abroad to work for 5 weeks / does he often work abroad
work out how much maintenance he would have to pay ( based on how many nights you think he will have the child
https://www.gov.uk/calculate-child-maintenance
of course it is better to be alone than to be with a man like this
what is the hurry to find a replacement man ?!!!
you are only 30
does your child have a passport ? be very careful he does not remove the child and take him/her out of this country to his home country without your permission
what is the financial position ? do you have access to money / to a joint account ?
it's called getting your ducks in a row, and it sounds like you have up to 5 weeks to do this ?