Quite a few people have commented on how your tits growing very large doesn't work well with lactation enabled, since the way it worked previously, breast flesh and milk contents were completely separate, and once your jugs hit their maximum size, flesh took priority, leaving sometimes absolutely no room for milk. This is mainly an issue when trying to get the strength benefits of being the cowgirl.
So this is a solution I've come up with which hopefully will operate quite a bit better. Breast flesh can now
contain milk; one unit of boob flesh can contain one unit of milk. This milk still contributes to your melons' weight and therefore your total weight, making you fatigue faster and fall over easier and so on. Once your milky mammaries can no longer contain the milk it's producing, your tits will expand as you produce more milk as before. At this point, lactation will occur periodically, leaking some or all of this excess milk. Reaching maximum bust size will cause you to lactate as soon as you produce more milk.
If your breasts fill up with air to maximum size and try to keep going, then the game won't force milk out until you lactate naturally, it'll just discard the extra air. If your breasts fill up with (spoilers) silicone implants to max breast size, then you will be forced to lactate if there is milk that can be removed to make room.
The only ways to get rid of the milk contained inside your titty flesh are to reduce your flesh volume (so that the milk is now not contained in the flesh) and then lactate, or to use the milking bench. The milking bench now will only latch on to your bloated udders with its suction cups if their nipples are exposed, which would require you to remove most bras or dresses. Wearing cursed versions will obviously make that impossible. The main exception is the maternity bra which has flaps that you get the option to peel back when you rest on the bench. And obviously the ribbon bra and the cupless bra and so on won't stop you getting milked.
Some balancing may be required, maybe it'll change one day so that your busoms can only hold one unit of milk for each two units of juicy chest flesh.