How and when to feed new rescue cat

[Charlieandlola]

My new rescue cat arrives on Friday and I am determined not make the same mistakes with this one that I did with my last cat.

I basically over fed my last cat as I had no idea on appropriate timings, cat food content and portion size.

Cats Protection have told me to put 30g of dry food down in the morning, then half a pouch of wet at around 4/5pm and then the other half around 10pm.
I have bought grain free dry and wet food from Zooplus and realise with shame that the supermarket stuff I fed my last cat was basically shit and meat flavoured pure sugar. I have bought Thrive, Lillys, Applaws and Crave to see which she prefers. CP are sending half a bag of Purina ( which she is on at the rescue) to mix with other brands so she has some familiar tastes to start off with. If she doesn't like this lot, I will then try another batch of grain free brands from Zooplus.
The new cat is only 2kg and CP have said she should end up as no more than 2.5-3kg. My last cat was 6kg when she died age 15.

Its the timings of the food I am more concerned about tbh - don't want new cat to be hungry as well as anxious in a new home, but equally don't want to overfeed again.
Does the CP advice sound correct ?

Car will take a while to settle, I had wet and milk when my kittys first arrived. Then went onto dry. My first cat only ate the jelly off the wet food, still does. The other will eat everything. Usually just dry food and water now.

Amounts of food vary between brands so feed according to the weight of the cat. Ours has 30g dry a day and a small tin of Thrive wet food or a Blink pouch. That doesn't sound loads compared to us but he weighs just over 4kg.
It is best to introduce new foods gradually to prevent upset tummies.
The first week we had ours he didn't each much then day 8 he inhaled his breakfast which is how he is. We tend to feed him smaller amounts more frequently. If you give treats regularly reduce the amount of dry food a little.
Do you have a photo of said cat?