About Research, Training and Network budget

Hello All, I am a Marie Curie ESR working at University of Bristol, UK. I am in the second year of my PhD. I just came to know that being a non-EU / non-UK citizen, I have to pay the tuition fees £19,700 per year (£59,100 for 3 years). This amount goes from the Research training and network budget (which has 64800 Euros in total for 3 years: 1800 Euros per month). Now, for carrying out my secondments, participating in Conferences, there is hardly any money left. Does anyone have any idea on what to do in this situation? Regards Mayank