Not only can't you properly AFK cause you have to feed it every 20 minutes but I prefer to actively play the game.
What's the point of playing if you're going to be afk anyway.
lol weirdos.
Funny that in every topic when I help people someone always comes along and tries to troll me.
Now rolover: Play dead !!
because it's one of those things where you try to accomplish (getting a 99 evolved homun) throughout the game, and you get exp from them too!
plus, it used to be easier to afk with auto attacks and auto aid.
just feed it to 75~85 if you plan to afk for about an hour, or do the 20 min intervals, your choice.
Just takes longer that way!
Starving at 1%~10% -1 (every 200 seconds)
1%~10% 0.5
11%~25% 1
26%~75% 0.75
76%~90% -0.05
91%~100% -0.5
1-3 Hate with Passion
4-10 Hate
11-100 Awkward
101-250 Shy
251-750 Neutral
750-910 Cordial
911-1000 Loyal
New Homunculus are born with 20 intimacy (Awkward).
So to get it to loyal You'll need to feed it 891 times. If you don't prolong it by stuffing it like you suggest.
Now you can get 1 point every 10 minutes. So it will take 8910 minutes (145.5h of gaming time) to get it to loyal if you feed it properly.
Now if you wish you can screw that up and overfeed it to prolong the process. Personally I think that would be a very bad idea but to each his own.
Oh and I don't know where you got the number 10m from I didn't actually buy blue potions I made them from blue herbs I had but yeah It wasn't the most economical solution but it sure made the leveling more fun cause I actually had to interact with the game. (tanking, healing myself and pitching blue pots to the homun).
Anyway I'm not trying to start a war here if you want to AFK that's fine I just hate waiting for stuff so I'd rather play actively.
This is going quite a bit off topic now so I'll stop posting here.
I hope we managed to answer the OP question anyway.