That approach to not filling everything if prompts just don't work out for one reason or another seems very reasonable. I should adopt the no guilt approach. Nobody ever complained to me if I failed to fill a prompt they left, but that doesn't help. I still feel guilty about some prompts I did not fill in 2006 (I wish there was a statue of limitations or something for internal fretting) and some in 2012, even though for the latter I have the excuse that actually my father's final health decline and death started soon after, so I was mostly preoccupied with the death of my remaining parent and didn't do any art. Which is you'd think any brain would accept as reasonable to abandon some fanart prompts and forget about it, but apparently not.