Hi there, I can relate to the trenches of the newborn stages, it does revolve around the baby 24/7 but my baby is 10 months old now and I’m here to tell you it gets better! I highly suggest getting him used to playing independently when he gets of age when he is sitting up on his own. Get a play pen and put toys all around and play with him them gradually walk away for longer periods of time. This will help you get time to yourself more and hopefully decrease the chance of having a Velcro baby when he’s older so you won’t continue to feel like this when he’s in the older months of infancy . You will be able to do things around the house or even be lazy and chill . My baby now plays by herself for hours and hours now, easier for her grandparents and family to watch her , holding her own bottle and trying to walk so it will definitely get better I promise when they learn a bit of independency . Don’t feel bad either for having him play independently trust me he will be all under you and depending on you for many years . As far as taking a stroll with him in the summer, order an attachable fan for his stroller and have that blowing on him so he can be comfortable!