Was I rude in this situation?

My mom has been sick for quite a while and has been in the hospital for 2 weeks, but is now out. Me and a sibling have been taking care of her at her house, including bathing her, making meals, cleaning, etc. A brother from out of town wants to come in for less than a 24 hour period to “help”. His help in the past is to come in, nap for 2 hours, then go shopping. I emailed him what we needed him to do, bathing, cooking, cleaning, etc to give us a break. That was 2 days ago and I havent heard from him since. Was I rude to say this to him and should I try to call him?