I didn't know what to do?

Lately I've been thinking about having a baby, my last and only one turned three months ago, and I have noticed he feels very lonely when we go outside or to parks everyone is with their siblings and he is playing alone if there is no one else, in daycare he thrives because he has his friends and sometimes when we pick him up he cries and says he wants to stay which breaks my heart, we did everything we could bought him toys to play with, but we don't have toddler energy and we have work to do, sometimes I can't even use the bathroom nor cook cause he is so clingy, grabs my dress and begs for me to stay and keep playing, I feel so sad so I open the TV for him, anyways my husband says the same thing but then we remember the sleepless nights, the stress and the hard work of parenting, and I have to quit working again, we are now thinking to wait until we move next to family to get some help but I am not getting younger and we still have a year or more till we move.