I (39M) have been married to my wife (24F) for five years. Last year we decided to start trying for a baby and my first son was born in January. My wife had a difficult pregnancy, but thankfully no major complications. She delivered via c-section as I was concerned that a vaginal birth would damage her body, and so in addition to the normal issues she's also been recovering from the surgery.

I've tried to make things easy for her. I set up a crib in our bedroom so we'd be close to the baby and could rotate waking up. That ended up having a negative impact on my performance at work, so I bought a bed and moved into the room that will eventually be our boy's room. My wife complained, so I invited her unemployed sister (18F) to stay with us for a few months to help out. She moved into our bedroom, and I moved my wife into the living room, where we have a fold-out couch.

Since her sister arrived, my wife has been letting her handle all of the chores and errands, in addition to the babysitting. She's also started to drastically overeat. I spoke to a nutritionist after our son was born and we came up with a diet plan that allowed her to get enough additional nutrients and calories for breastfeeding, and got set up with a proper milking schedule. However, my wife has not adhered to this and as a result has failed to begin losing her pregnancy weight, and has even started gaining fat.

I sat her down two nights ago and told her I was concerned for her health and afraid she's setting a bad example for our son. He may not be consciously aware of it now, but he's subconsciously learning what acceptable habits and bodies are like. I told her that I would be happy to hire a personal trainer and hep her get back on track, but she had to want to be healthy. She's been in a sour mood since then, and some of my buddies have suggested I was too straightforward about the whole thing.

AITA?