So, I have a ton of 8oz Dr. Brown plastic bottles that I was about to pack away because LO is down to about 5oz per serving. But I'm wondering if I should just get rid of them due to overuse.....??

They were used for an exclusively FF baby for a year, and then for pumped milk for my LO for 5 months (so, about half of his feedings). Do you think they still have some life in them and I should save for next baby (God willing)? I also have 7 5oz medela bottles for pumping, 10+ Lasinoh bottles for feeding, and various other bottles of other brands. So, it's not like they're my only bottles.

If you re-used bottles for baby #2 or 3, how many cumulative months/years did you use them for?