B.D.
The best advice I can give you is that you are only one person. My kids are close together and there were plenty of times one was screaming for me while I was attending the other. I would just repeat to myself "I can only do so much". You learn to juggle them. It does sound like you are spoiling him a bit. If he screams and cries and you give him his way, it just teaches him that screaming and crying work. I would put a stop to that quickly. One thing I found that really works well is to praise the child when they are doing well. I used to be bad about not acknowledging my oldest when she was being good but yelling at her when she was acting out. The yelling was still attention. So now if she's sitting down coloring, being good, I'll sit down and start coloring with her. If she starts being rude I get up and walk away. Works really well :)