My husband entered care two and a half years ago following me being his sole carer for 7 years. I will be 70 this year and like you blessed with good friends and family.
I visit my husband daily but now have a good social life with the friends who knew me before, through and now after dementia care. My husband is settled so that takes so much worry away. Hopefully it won't be too long before your husband settles and you can make plans to do what you would like to do.
I know when my husband first went into caree I sat and made plans, things to do, places to go, it was something to look forward to, took a while to be ready to do it but I got there. I suppose I am lucky in the fact I don't mind my own company so being on my own is not a problem. Bring lonely would be a big problem but I have my friends and family and also my wonderful supportive dementia friends too.
Give yourself time and how wonderful to have two lovely dogs to come home to.
Take care,
Jay