Plants vs Zombies 2 problem

[GSM-S]

Unfortunately, Plant vs Zombies 2 reached almost 800mb in storage. It has been steady increasing. I would like to do a reinstall. However, I do not want to lose my progress. What can I do?

 

[Just_Me_D]

1. Backup your iPhone and then restore the backup after you've reinstalled the game and hope that your progress gets restored.
2. Contact the game's developer and seek advice on this matter.