Drobo

Alternatives to replacing a drive

Hello! I have had to replace a ton of drives already. I am a photographer and I don’t need backups of files from like more than 3 years ago (plus all I need are on my other external hard drives). I use Time Machine. One of my disks is getting low on space, and I don’t want to spend any money on replacing another disk. Are there any alternatives that I can do instead of replacing a drive? Is there some way that I can remove old data from past X date, to save space? TIA!