“It’s just a vulnerability of mine. I know I need to take good care of it.
“I have to let the again relaxation. [It] wants correct and cautious administration.”
Raducanu opted to play in Berlin rather than Nottingham after being offered a wildcard for the WTA 500 event, which starts on Monday and is set to feature nine of the world’s top 10 female players.
She will leapfrog Katie Boulter when the WTA rankings are updated.
Eastbourne takes place from 23-28 June and Wimbledon starts on 30 June.
Raducanu beat Jessica Pegula at Eastbourne final 12 months to say her first win over a top-10 participant, earlier than reaching the fourth spherical at Wimbledon.
