Balancing population growth with 4tpy

[Spartan 666]

I created a 4tpy script with HouseOfHam's script generator and made it working.

I was wondering, how can I balance population growth having twice the turns as before?
I mean, let's say I have a settlement with a pop growth of 5% per turn and I don't build anything that effects health, farms, pop growth in general. Let's say that 5% decreases constantly until it becomes 0% after 20 turns.
How can I halve that growth rate (2.5%) but make it last twice (40 turns instead of 20)?

I thought I could halve the fertility values of any region, but I think this would decrease the maximum population.

If it's possible to do it only editing fertility and EDB, without any background script, it would be great!

[Aradan]

Halving base farm levels in DR is the easiest thing to do.

You could try simulating harvest/sowing periods by having the script damage/restore/damage/restore farms every turn...

You could just use pop-growth very sparingly.

[Spartan 666]

1 - Halving base farms level was the first thing I thought, but won't this also halve the maximum population for that city?

2- This would be far beyond my poor scripting skills...

3 - What do you mean with "use pop-growth very sparingly"?

[Aradan]

1. Does base farming level affect that? At any rate, how many cities do actually reach their pop limit within the campaign's timeframe and how much of an impact will this have on your campaign?

2. Also, a chance to hone them.

3. Remove/reduce pop-growth bonuses from buildings, like traders (have them give some other bonus instead).

[Spartan 666]

1 - I don't know if it affects that, just asking...my concern is not having huge cities in 30 turns (7.5 years)...

2 - Without any doubt!

3 - Ok now I see what you mean. Decreasing base farm level seems the easiest and best way, I'll try that way...