Your friend planned to breastfeed her baby for at least a year. Her husband insists that she switch to formula full-time.What should she do?

Pump.   Formula is mostly sugar and syarch- horrible for a kid.

If she is planning to go back to work part-time, then she will need to get the baby used to an occasional bottle before then, either of expressed milk or formula. She does not have to give up breast-feeding altogether. 

she can use a breastpump and put the milk in the fridge. daddy can feed the baby with the bottle. he probably want her to stop so he can get his wife's body back to normal. leaky breasts and sex is very messy. 

The woman has the right to decide this.  Her husband needs to bow out.

You friend's husband should make sure her husband knows that natural breast milk contains many properties which will help her baby grow, protection against several illnesses and will also go a long way to help protect the mother against several illnesses including breast cancer.

If she decides to go back to work she can get herself a breast milk extractor and store her milk so that the baby can still be fed her breast milk if she is at work or elsewhere.

There is a great invention (patented in the 1850s!) called a "breast pump". It's great because the baby can still benefit from breast milk, the mother can still produce breast milk, and ANYONE can feed the baby. Tell your friend to check that out. 

While you're there tell your friend to tell her demanding husband that there are plenty of other ways he can be involved with the baby. Changing diapers, bathing, playing and looking after the baby when the wife needs a farking break.... 

She doesn’t need to stop breastfeeding, just use a breast pump for occasional bottle feedings.   It also frees up her time, and allows Dad to care for the baby when she’s busy doing something else.  

It's none of my business. It's not my place to tell them what they should or should not do. What I can do is offer my opinion:

Breastfeeding should continue full-time until at LEAST 6 months. If they begin bottle feeding too early, the infant can develop something called "nipple confusion syndrome", in which they will begin to refuse to be breastfed (breastfeeding is more difficult than bottle feeding for the infant, and they could begin to refuse the breast). After about 6 months, the chances of this are lessened. At that point, if the husband still wants to help with feeding, she could consider pumping, so that the husband can bottle feed the child, while not switching to formula.