Calculating when to whip and what the OF will be is easy, if you don't mind doing a little math
First work out the value of a 1-pop whip
Hover the mouse over the hammer icon shown in your image. This will show you base production and modifiers. In your case the modifiers are (I think) +25% from OR and +25% from forge. That means a whip is worth
(1+.25+.25)*30 = 45
Now work out optimal number of
for max OF
Your whip is worth 45

. The university costs 200

. You want to 2-pop whip, which means you want to be
1
short of a 1-pop whip
That means you should invest
200 -(45*1 + 1) = 154
Now calculate OF
You know the whip will give you 44

, because that's how you set it up. You're whipping 90

when only 46

are needed. (Here's what the calculation looks like:
2*45 - 46 = 44).
Now add on the production for the final build turn
after whipping and you have your OF.
Obviously the numbers change when you have different modifiers, are building different buildings, and when you can't / don't micro it to exactly 1

short, but the idea is the same. Hope that helps for next time!

or

?