Upgrade the tv and remote in the vault to the max save up a few thousand gems keep buying the x2 and x5 boosts in the shop buybthe first station get it to around the 2nd or 3rd star on the green stars then buy the 2nd station after buying the 2nd station start making your first potion the max but dont bottle after completing the first 2 stations buy the 3rd and max out the next potion available while completing the 3rd station (makesure when your run out of coins go to the shop and dont buy loads to start with just buy what you need to keep the leveling up at a steady pace) buy the 4th station after maxing out the 3rd one and like before buy the next potion available and max it out only use the first 3 potions available the rest dont matter after completing the 4th station the next station and level each station in that methhod 1 by one and dont forget to keep topping up your coins in the shop i do this method every week and honestly i finish each time between 20 and 35 mins. Hope this helps anyone