my bf doesn’t have much time for me anymore. should i speak to him about it?

ive been dating this guy for a while now and he’s been very loving and caring and we’d talk to eachother the minute we could every day. i have autism and bad anxiety and i’m an overthinker to give you some context, and he has adhd to give you some context as to how our brains work. when he just went out with his friends a couple days ago i didn’t mind at all, i told him to have fun and he called e twice during the night just to chat for a bit. the day after that he was out the entire day, next to no communication. when he got home he didn’t tell me until two hours later, and i was excited to call him and talk to him but turns out he was messaging me because he was tired and wanted to go to bed. the next day he was out again for a while and he said he just forgot to text me, so i said it was okay but i missed talking to him. i asked him when he was free to call and he said the day after, so he promised to call me that day. today is that day and he hasn’t texted all day, he was at school so i understand that, but there’s been next to no communication on his end and we just had a tiny chat and i asked if he was ready to call and he said he’s really tired. i told him its okay and he can rest and he isn’t responding. i’ve tried to be the best girlfriend i can but in secret i’m worrying like crazy that he doesn’t love me as much as he used to anymore. we had a thing a while ago and he broke my heart, but he says he’s changed now. do i have a right to be anxious about this situation atm? should i talk to him about it? what do i say? Please help me ☹️