Originally Posted by cillybean83:
I think the letter sounds great! Just a thought though, if he is only there a few afternoons a week for a few hours, have you considered "wearing" him in a sling or snugli while he sleeps? It's a bit of a hassle and I wouldn't want to do it all day, but if you were to put baby in his snugli, then rock him until he sleeps, would you be able to get up and go about your day with him sleeping on your chest?
I had a baby like that, he only wanted to sleep when he was being held, he was part time so I just caved and held the little guy because that ended up being easier for me than hearing him cry.
good luck! hopefully the parents will appreciate how much you're willing to do for little "R" 
Ha - no way i could "wear" this baby - he is a CHUNK!! Not sure what he weighs but if it's under 25lbs I'd be very surprised!