Hugs,
A lot of lo's tend to go through phases like this - it is very normal. I would just let your DH persever with a particular feed, so that your lo gets used to other people feeding him.
You say that you are battling to feed yoru lo too. What size teat are you using? Do you think he could be bored with the flow and want a faster flow teat?
Could your DS possibly be teething, and this is why he is not taking a bottle very well?
Paula