Tomorrow and Tomorrow and Tomorrow is definitely not a “bottle episode”. Bottle episodes are episodes which require minimal or no additional budget for SFX, sets, etc beyond what is already available from previous/upcoming episodes. They exist as a money saving device which was necessary for shows to run 26 episode seasons and shell out for expensive productions while remaining within their budget. Tomorrow and Tomorrow and Tomorrow wouldn’t have been the most expensive episode to film, but there’s still a lot of exterior scenes, VFX, etc which make it quite a bit pricier than an episode almost entirely confined to a handful of existing sets.

It is a happy accident (whether by chance, or because the format forces an emphasis on the stories Trek has been best at telling) that Trek bottle episodes tend to include some of the best writing and character moments of the various series. This naturally leads to some confusion about what a “bottle episode” actually means.

Strange New Worlds has not had any true “bottle episodes” to date, although they certainly have been able to work in a lot of high quality character moments.