The answer is very simple, consider yourself as someone who is new on Instagram and ask yourself what would you do :
1.You would scroll feed and be excited to see photos.
2.You would follow some suggestions which Instagram shows, probably visit their profile and watch their content too.
3.You would sync your contacts and follow them, this shouldn't be done always.
4.You would start following, liking and other things in very less limits.
5.You would engage in natural random actions such as viewing stories, feed scrolls, liking posts, leaving emoji comments, joining live sessions, and imitating other human actions.
6.You would start posting content on your account - Posts, Videos, Reels etc
1-2 weeks max.
Please define what you actually mean by spamming here