Am halfway through making my 1st ever homemade trifle and have questions

[ChristmasStrumpet]

I am making it for dessert tomorrow as I have family coming for lunch. I started it today as I have lots to do tomorrow and wanted a head start so I can actually spend time with my guests.

So far I have soaked my madeira cake slices in sherry. I then layered with defrosted raspberries and covered with a jelly. Its now in the fridge setting.

My question is when is it Ok to put the custard and cream on the top? Will the whipped cream need to be done tomorrow so its stays fluffy or will it be OK to whip it later today and put on?

and

Once layered with custard do I leave that to set before putting the whipped cream on top?

Thanks in advance

Poor ChristmasStrumpet asked a valid question regarding making a trifle using jelly. I cannot believe how many opinionated people where ready to judge and comment on a simple question.Trifle with jelly is a personal preference as is everything in life. It would be nice to answer the question not judge her recipe method.