11+ slam winners Borg, Sampras, Fedalovic have all won a slam or masters as teenagers except Federer who won his first masters as 20 y.o. and slam being 21 y.o.Indeed a bold prediction, that was my first thought. However considering that it'll actually take you some 15 years to see if that'll ever be true (as pointed out here), maybe not such a bold one eventually. But I promise to ne here to check whether you were right or not @enlightenedth - should this forum still exist then .
Federer won his 17th slam as 30 y.o, Nadal and Djokovic as 32.
So, if he was also a late bloomer (compared to ex-goats) like Federer, he should start winning multiple slams & masters per season at his 22/23 at the latest i.e. about four years from now.