My partner has stopped being as attentive. What can I do?

I feel like all he does as soon as he even comes home is talk about work. He has a good job and lots of responsibility but my job is also stressful. We’re only having sex twice a week at the most and for a young couple only a year and a half into their relationship I don’t think it’s a lot.
I feel a bit neglected.
his messages are a bit lacklustre too and not a great deal of effort goes into any phone conversation. I guess he could be busy but he could also make more effort
My partner has stopped being as attentive. What can I do?
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