My mother in law has dementia and because she can afford it she now has a full time carer living with her,so her day to day needs are taken care of such as meals,washing etc.The thing is though that there are other things that have to be taken care of decisions that the carer can not take responsability for.It is important that all the family get to gether and decide who can do what and when,it makes things so much easier when everyone will pull together and do there bit.
Would it be possable for you to have a family meeting,and basicaly put your cards on the table and tell your family that you just can not cope with this situation on your own and,can they all pull together and get a rota together so it takes the pressure of you.(Are they aware of your illness?)As far as advice on the dementia i am afraid that i am as green as you are.It seemes to be a case of taking each day at a time as in my experiance it is very difficult to predict what the next stage will be.
Hopefully someone else on here will be able to advice better than me.