Hi, my name is yvon! Stressed about migration to UC

I'm have a biographical phone interview this afternoon 4 change Esa benefit to migration uc.and have a joint claim with partner but he works.A support worker did a calculator benefit check but apparently we won't get any help with housing benefit or tax,and they are going to halve my money from £647.00 to about £360.00 month.After paying the council tax which I do alone and half my share of gas and electricity am going to be left with £25.00 a week to feed us as I pay for the food.My partner gets £1,900 amonth but we have so much to pay in travel car lease but car been off road 2years as battery gone our rent is almost £900.00 month plus other outgoing we left with nothing. Am suffer acute social anxiety rarely go out and am so distressed that I feel I could just die with the stress.Dunno wot to do and can't hear on phone well.