on average, you get about 4k xp per regular match. to complete the pass from chapter 6-10 it requires exactly 1 million xp.
to finish the pass you would have to play 250 matches within a month. thats about 9 matches a day. at most, thats 6 hours of matches a day. of course that isnt taking into account missions. now, assuming you have 3 weeks of weekly challenges left, and you do ALL missions, you get about 190k xp from missions alone. shaving that off the 1 million mark and recalculating brings your daily requiremnt of matches down to 8. thats still, at the absolute maximum 5 and a half hours a day of matches. certainly doable ( you might wanna kys afterwards) but i really dont think its worth that much effort. stay healthy and happy man, dont waste your time on it ( remember this is an estimate and the length will vary depending on your performance)
[unknown] also these estimates are assuming you see this at least the day after i post this. so, if you do try it, remember it will go up a little bit more for every day you didnt see this since you didnt have the chance to start this torturous journey with the amount of days i originally calculated for.