How should I navigate this

My partner is in school FT and in his down time plays a online game similar to WoW. Sometimes he gets a little carried away and then openly complains about reading he needs to catch up on and on the weekends he spends all day at the library reading and whatever else.

After about a month of this routine wake up at 5:30 am to play till about 8 am, taking breaks to make his lunch for the day and playing with our toddler. He goes to school from 9-5 and will start playing again about 5:30 pm to 9:30 pm, again to break and eat and give another 20 mins total to the toddler. He will proclaim that he is too caught up in his game and give it abreast for tips about two weeks and then go back right to his routine.

He just got into his gaming routine so I mentioned that he doesn’t work out anymore or do yard work anymore, weeds to your knees. He is bothered that I would even take a jab at him and his gaming. He tells me “you need to mind your fucking business”

So now I need to mind my own fucking business when it comes to work, school, his gaming. All that is left is the kid. At this point we are no longer partners but occasional lovers and parents.

How would you handle this.. go about it if this were your partner.