Why are you constantly swapping in and out?

You should buy Monero directly with fiat, or swap what you're planning to spend for X amount of time with some buffer (just say the month), and spend from that.

Do you mean syncing is cumbersome? There have been several major speed improvements within last couple years, there are wallets that let you background sync so you're always caught up (like Cake and Anonero), and also light wallet servers you can run and connect to so that you don't have to worry about it syncing.