Big brother to be

Since I've found out that I'm expecting, my son have been hugging up on on me since day 1. He'll always ask me can he rub on my belly (only 6 weeks). My spouse been in New York for 2 weeks now on work duty and I'm here in Florida 😒😔 My son is always asking can he lay down with me.   He'll only fall asleep with him rubbing my belly or him falling sleep on top of me. Oh ps he's 4 years old. Not complaining though it's just so overwhelming sometime.