what about having 15 positions:
Bitcoin (BTC)
Ethereum (ETH)
Solana (SOL)
Terra (LUNA)
Avalanche (AVAX)
Shiba Inu (SHIBA)
Polygon (MATIC)
Cosmos (ATOM)
ApeCoin (APE)
Decentraland (MANA)
The Sandbox (SAND)
Gala (GALA)
Chiliz (CHZ)
Enjin (ENJ)
Moonbeam (GLMR)
Or is it too much and i should remove 3 or even 5 holdings?
Too much or not, only you can know. I have more than 15 coins in my wallet, and it is waiting for the next rally, so I don't mind just holding it because that list is good to hold.
I don't know about GLMR, APE, ENJ, CHZ, or GALA, but if you think those coins/tokens are good, you can still hold them and not sell it if the price is not increased. My focus is on BTC, ETH, and BNB, but the other coins don't have much attention for me, although I am still waiting for the rally.