Where do dads with babys go?

I have a 8 week old daughter and I am doing shared parental leave with my wife. I have been off all the time since my daughter was born and I plan to be off for 19 more weeks through out the year.

I have found it really isolating, all my friends are in work and aren't really super interested in hanging out with me and a newborn who has colic.

We did NCT classes before my daughter was born and there is a group meeting soon but my wife has been out every week and sometimes 2 or 3 times with some of the other mums but most the dads went straight back to work. There is a mums WhatsApp group they set up but I'm not included, I'm in the dads

We went to the local "children's centre" and there is a mums and Tum's session twice a week but no session for dads. There are other "play" sessions but my daughter was premature and can't crawl, lift her head or anything yet. I am looking forward to swimming but ther are all at 4 months ( which is 4 months away due to my daughter prematurely)

There are also breast feeding support groups that my wife has been to but obviously I can't attend.

I am going back to work in 3 weeks for a little while but I really could do with somewhere outside the house I could take my daughter.

Any dad's got recommendations?