What is certain is that block rewards will become 6.25 from the previous 12.5

This is a matter of speculation and it could go either way. Based on past halvings, price tends to go up but as @mk4 has stated, it still depends on the demand and the supply. There is also the argument that since miner's reward will be reduced by half (from 12.5 to 6.25), it also means they won't be able to sell as much BTC as much as they used to do.

It seems the "Corona effect" is now over as Bitcoin is concerned. The price is now slowly recovering from the crash when COVID-19 was declared as a global pandemic where both "whales" & retail investors cashed out.