im gold 2 rn and i dont like my chances of getting to play 5 before it ends, from silver 5 to gold 5 can only be donne by a smurf from diamond that plays a LOT of game every day
but i play in NA and there are 1,600,000 ranked players while only 200,000 in oceania, so ranking up is probably much faster.
so you will be able to reach gold 5 only if you really are a gold player.
but the fact that you are silver 5 shows that you arent in the first place
league isnt about grinding, no matter how many games you play, you wont go up if you dont improve.
tl;dr - most probably not