You don't have to worry about this at all. You can even find players in the top 50 who alternate most of the time (even single notes) like Azer and HAUHAU. I myself alternate everything at all times, though I am by no means a particularly skilled player.
KukiMonster wrote:Thanks all for the tips. I guess from what I'm hearing, alternating on sliders is not too bad. Actually I'm still used to alternating on sliders its just I'm worried if this will turn into one of those walls later on when I do higher pp maps. But If this is common and not a problem at all then I will stop paying attention to it.
Don't pay attention to things like alternating or single tapping, just go with whatever feels more natural to you.