Hi @Rey, welcome to the forum! Unfortunately, I don’t think you can make it to CoT (definitely to level 60 if you can speed up expansions and shed off a LOT of coins for decoration XP), but CoT requires 28 regular events to complete before opening up CoT so getting to level 60 from 50 as well as finishing 28 events, even for VIP members, within the time span is almost impossible.
Don’t worry though, Mosasaurus is a battle stage unlock at a later level so you can aim for level 60 at a steady pace, to get ready for the next CoT. A non-VIP needs around 10-12 days to complete 28 events and a VIP can complete them in around 7-8 days, so prepare for the next CoT soon. Hope this helped!