So I go back to work in 8 wks and I won't be able to express whilst there (which is fine). DS will still be having 2 feeds during that time. I have a stock of expressed milk to get him through a few weeks.

Will formula feeding him those two feeds but breast feeding the other Feds cause him trouble? Also how long will it take for my milk supply to adjust? I don't want to be at work with bursting boobs so I
Trying to work out how long before should I start