[Mobile] How to gain extra sun (trick) | Last Stand: Roof

I found this trick way back 2014-2015 and post it on my deleted YT channel "iPaid Gaming" on late 2021. A version of PvZ mobile free where Giga-Gargargantuars are completely invincible no matter how you combine all explosives to take 'em down, they will only perish on lawn mowers/roof cleaner.
There's a guy commented on my video named John Paul Buce my fellow filipino who claimed he already know about the trick a long time ago(I don't know when he figured that) but he does posted on his YT channel either.
his YT channel:
/ @johnpaulbuce
Each round you will get extra 375 sun after removing all column 1-3 pots each level passes by, multiply it by 4 so you will get a total of extra 1,500 sun on Last Stand: Roof, will also work on its night counterpart.
Date created:
20241003_190739
Credits/Attribution (Music): Artist: Audionautix Website: audionautix.com/

[@Georgetwo2]

Play fog endless last stand endless

[@nathanielpadati2015]

I might gonna do it, while looking for low-cobbed setup where never been play by anyone :)