He needs you and your time. He is missing you.He may need more time to adjust with the new environment. So help him with the transition. It will be tough on you but have patience. My son used to cling to me like a little monkey after his daytime hours. When you reach home, take him to bath room and wash his hands. Get something to drink and give some snacks. Once its done , sit with him on a sofa/ hold him, hug/ kiss/ touch him, talk to him or just be there for him. You can also switch on tv and play some thing and watch with him. I used to prepare tea for me and relax with my ds. Also, while taking him to bed , be with him there. It will help. I used sing lullabies and its like a drug. Even now, my kids love my singing ( only them ) when they go bed. I think they feel loved. My ds was a picky eater- only milk and peanut or pbj, that too once in a while. We talked with his daycare people too. Finally, we consulted doctor. They suggested us to give what we eat during our dinner time. I used to try many things. If he is energetic nothing to worry. It will be a good idea to have a schedule. I used to reach home by 6.0PM. 6-7 - be with them relaxing. 7: bath time- allow them to play and will be there. Once its done then dinner time, I used high chair for kids, and eat with them. 9: bed time. No change. Once they are done, my me time. Also , set expectations, if they eat a few mouth ful, they get half an hour screen time as a reward ( only big screen, aftee dinner ). I( working mom) used to spend atleast 3 hours for my kids every evening. It was tough. My dhs schedule was different, so he couldnt help much. My ds used to get sick every month. It took some time for him to adjust with the new environment. Now he ia smart kid and very independent too. So OP, it will also pass, so try to relax, try deep breathing when you loose patience. Most important, please dont ignore you- eat well and relax -find ' me time' and love yourself.