Is it enough to send to a 'cold' wallet?

Hello, So recently I have bought $400 worth of btc (0.006) and I'm currently holding it on an exchange, I know I gotta move it to my own wallet which I've already made, but moving a really small amount of btc is worthless due to the fees, so is $400 good enough to already store it in my own wallet? or should I hold it until I have $1000 worth of btc (for example)

I'm just starting into this bitcoin stuff, and I'm planning on holding long term. Greetings. ^{^}