Sanity check for estimates

[mpldr]

Is your feature request related to a problem? Please describe.
Currently, estimates do not have a sanity check, which can lead to me reaching my target weight around 178,000 years ago ^^

Describe the solution you'd like
Hide the estimate if its in the past or more than 5 years in the future.

Additional context

[braniii]

hi @mpldr, thx for opening this issue :) this sounds like a bug to me, negative values should be cought. And such large times do not make lot of sense.