From here we can see the big picture that BRICS countries after Trump tariffs are busy taking care of their respective countries' economies. They don't have time to gather to discuss the future development of BRICS. Because the main principle is to take care of your own country first before taking care of other countries, so each must first ensure that the tariffs that Trump has implemented provide plenty of time to stay at home with all its problems.
That is very normal, first you take care of yourself and then you look for others. This is why EU is in trouble as well because most of the time we are dealing with a nation where they have to handle themselves very carefully and they have to handle what we are dealing with first and EU is doing very difficult and because of that we have to handle what we are dealing with at the moment first, in EU there are nations which are poor and there are nations which are rich and because of that we are dealing with rich nations paying for the mistakes of the poor nations and that is not always great.
BRICS have the same thing, you are not going to see power of Russia and China be same as Brazil and that is going to be the most important difference in the BRICS world too. Just like how Germany and Greece aren't the same.