Understanding PeerFlood limits when adding users via Telethon — how to design a safe import flow?

Hi everyone, I'm currently working on a script that adds users from a .csv file to my Telegram group. The script works well, but there's one problem: after adding 2–3 users, the account gets hit with a PeerFlood. I've set a time limit of 1 minute between adds, 2 minutes, and 5 minutes. I don’t want to set a longer wait time because the process would take too long. Maybe it’s my mistake for not wanting to wait that long, but does anyone know how I could bypass PeerFlood so users get added to my group faster and my accounts don’t keep getting blocked?