This time, it seems that Harry started to cut off his close friends as Meghan's pregnancy progressed. People writes that a lot of this seismic change happened about six months into Meghan's pregnancy. And it sounds like it was a lot of Harry's close friends who got snubbed.
According to an insider:
“Most no longer even have his cell number. They totally understand that men often drift from their friends after marriage, but there’s still a lot of resentment because they had been so close for so long.”
People does say that Harry has kept his friend Charlie van Straubenzee within his inner circle. Van Straubenzee is also Archie's godfather.