J.Y.
Please don't beat yourself up. You have a beautiful baby who I'm sure is very loved. Don't regret having him. You chose to have another child. He is here and is a great person, regardless of whatever issues he may have. Embrace him for who he is and help him be the best he can be. I have cared for children with special needs as a daycare provider and foster parent for many years. Each of the children brought such joy to my life. They all were happy, wonderful people despite their challenges. I say that you should trust your instinct on whether to pursue further testing with him. You aren't neglecting him as he is in EI. Continue with therapy and pray for the best. All children develop differently. He may just be taking his sweet time and catch up soon. If he doesn't, then the extra help will help him a lot. Only time will tell what hiss capabilities will be. Don't waste this precious time in your baby's life worrying because it goes by too quickly. Just love him. Things will work out how they are meant to be.