I think that how much one holds, can hold, or should not hold, of any asset is relative to the individual circumstances and conviction, there are no guarantees, and it ain't easy, if it was easy everyone would do it, i put in around 35% of what i had in 2022 in multiple assets, that much i agreed i could afford to loose with myself while still having enough to continue my path, but i was aware that risk/reward ratio at that bottom time was great, even though there were no guarantees, there never are any, there are just probabilities and risks. Asses how risky some asset isout of your total portfolio value how much risk you want to assign to that asset.
Then that's the amount you want to have. It's your homework to research and then assess what level of risk you asign to Btc, and how much you want to put into it out of your total portfolio value. On side note I dont advice anyone anymore to buy/sell any assets unless they specifically asking me for it, I don't want to be responsible, i'm just doing my own thing, and i dont talk about it with anyone from outside crypto forums.