For me:
Patriots: 24/7/365....I try to go to a road game once a year if possible (tough to do living in CA) and make a visit to TC if I am seeing my folks in Boston. Otherwise, it's Sunday Ticket for me every Sunday...and patsfans.com/Reiss/Curran/PFT/Peter King rest of the week.
Celtics: They would be my "1b" team....I catch national games on TNT/ESPN whenever I can during the season. Then watch every play-off game. Read all articles and etc... but in general, I don't follow the NBA like I did back in the 90's...in those days I was a huge basketball junkie...NBA/NCAA/and even some high school & AAU ball.
Sox: They would be a DISTANT 3rd for me...I just watch the standings every day....catch a few games vs. the Yankees on National TV during the season...mostly innings 6-9 only. Then come the playoffs, I'll watch almost every game...might miss 2-3 games at the start of a series and watch series clinching games.
Bruins: They would be a DISTANT 4th for me...never watch a game during the season. In the playoffs, I watch more and more as they proceed towards the cup. And even then, I just catch only the 3rd period usually.
Revolution: Never watched a damn game.... but if they make the MLS Cup again....I might give it a watch if nothing better is on TV.
It really comes down to regulating how much sports I watch...during football season I am watching TNF, 2 games on Sunday, SNF, and MNF...that's 15 hours a week right there for 17 weeks....then all 11 play-off games...another 33 hours. So, in total I watch 288 hours minus about 12 hours for games I miss here and there = 276 hours of NFL football during the season! That is like 11.5 full days wasted out of 365 (3.1%)....and I sleep/work 66% of the year, LOL!
For NBA ball, I watch about 40 games a year...all Celtic playoff/national games plus the Finals/Conference Finals....that's about 90-100 hours of TV time.
Because of all of this...I hardly watch NCAA ball on Saturdays....Saturday is my FOMO* day.
*Fear Of Missing Out