Every big step up will feel like losing something comfortable. That feeling is the ticket price, not a warning.

Moving up a level means giving up the position where you knew everything and were known. The new room has different rules, and for a while you are the least oriented person in it. That loss is not a signal that you chose wrongly; it is the standard sensation of having changed rooms.

When the discomfort arrives, name it as transition rather than as error. Give yourself a fixed period, say two months, before drawing any conclusion about the decision. Keep in touch with the people from the old room, and let the new one become familiar at its own pace.