Feeling pressured

My boyfriend and I have been dating close to four months now and I love him with all my heart and I'm very happy with him but lately I feel really pressured. He always wants to see me but between kid and work and doctors I never have time but about twice a month and I know that upsets him and he brings it up a lot but I don't know what to do. We've been fighting a lot more lately as well. He's offered for me to move in but I'm just not ready yet and I feel as though that upsets him as well. I feel I don't know what I feel. I'm trying to prioritize things in my life and fit him in because I love him. I feel selfish though not being able to see him multiple times a week like he wants, I've never been in that kind of relationship though. I don't know what to do. Any advice is appreciated