I was prepared to be a tad sympathetic towards him but it's obvious from your last few posts he's a complete addict, & has no brain cells left worth using ie he's beyond reasoning with.
As madamez rightly says do be careful he could turn nasty, it's good to think of an escape plan (& TBH good for you for the white lie about your salary) but is it worth being unhappy till then?
Could you cancel the SKY subscription & stuff like that? Or would that inflame things further?
You may be putting money into your joint mortgage account but make sure he is paying the FULL amount every month-could you arrange to pay your half direct to the mortgage lender? A friend of mine's ex remortgaged unbeknown to her, by forging her signature, she had all kinds of shite to sort out when she started to divorce him.
Sorry to be so negative but you are right to want a better life for you & your DD, good luck on sorting it out-I'm sure there will be many useful suggestions/experiences on here.