Is It Okay To Disturb a Molting Hermit Crab?

Hello,

I was gifted two hermit crabs a little over a week ago. This was totally unexpected and I didn’t ask for them nor was I prepared to have them. They were given to me in a 10 gallon tank and I plan to upgrade them to a 20 gallon in about a week or two but the problem is one of them has completely buried themselves and I haven’t seen him in 4 days 😭. Not sure if he’s trying to die or if he’s molting but either way if he is molting I’ve heard that crabs can take months to finish molting and I’ve seen many people expressing the importance of not disturbing a molting hermit crab but because of how small their living conditions are and the fact that he’s still in his original painted shell I’m wondering if it would be okay to disturb him in order to create a more comfortable environment for both crabs? Any advice would be helpful. I’m really trying to give both crabs the best chance at life and I’ve been doing research but I’m still incredibly new to all of this.