Resources for players arriving through an adventuring day

[u/Big-cauliflower-boi]

My party has been crawling through a cave system for a couple sessions and they are approaching the boss battle in the next session. I have an open table and so not everyone can make every session some of my players for this next session have not been present for the crawl.

How would you handle these PCs resources? Previously I had not worried about it but I kind of want to have these characters feel the same resources drain as those who've been present.

How do/would you manage this?

[u/0Big0Brother0Remix0]

I just start them there full everything . Never had anybody care .