Op I think the question of whether you’re being abused or not isn’t important. Only a psychologist can look at your relationship and answer that. At the end of the day it’s unacceptable for a mother and wife to be treated that way. It also sounds like he’s undermining you and dismissing your contributions. Being a stay at home mum is an enormous workload and a 24 hour job. The financial contribution is irrelevant. Perhaps he is stressed by having the financial responsibility on his shoulders, but it must also be stressful for you to be running a family on a low/unstable income and having unstable living situation and little opportunities.
It does sound excruciating and a horrible way to be treated. I can’t imagine being ignored for days in end with young children. It is especially hard as you would have so many day to day things to discuss. It infuriating, cold and leave you feeling sad and empty. I also imagine you must feel really confused and lost in the relationship.
I think it would empower you to work towards independence. It sounds to me like this is an oppressive situation. If he is ok with ignoring you for days then it would seem he doesn’t respect your place and holds the power or thinks he act you’re isolated geographically and without parents suggests you’re quite vulnerable. You need to be empowered and have a plan.
I’m not informed about the RI work opportunities and benefits. Perhaps you could join a forum on here to research working from home/remote working opportunities. Could you be entitled to benefits to retrain and get childcare ? You need to brainstorm ideas to get yourself more independent, sercretly save money and or leave as soon as you get a job. Regardless of whether you stay for now or leave then you need independence. This sounds very controlling. Is there a counsellor in your area that could help ?
Brainstorm, work out a plan of practical steps, and quietly go about getting independent.
If you feel unsafe then leave however possible. Have a bag packed with necessities and documents, and the names and numbers of shelters.
Perhaps you could suggest staying in the uk for a while while he does back and forth to the farm. This might give you more freedom, respite, and a change to find a job and get independent. I’m not sure of the specifics, so this might not work.