You have to work out what is best for you and Micheal first and foremost as you are the main person in his little life and if you go down then who will look after him ?

If dad is not doing his job properly (and tears dont wash with me as we can all cry its doing the dirty work every day that counts ) then take your son to where he can be cared and loved in a large family enviorment every day rather than twice every six months.

I have been in a simlar situation with five children and moved three years ago ! The children are happy and well adjusted which is the most important thing in the world.

If dad cant see that this is the most important role for him to play in his entire life then thats his loss (twice every six months is a disgrace) it does not have to be yours and yours sons also, you can make a life for you both with family else where.