Hi
yes its possible, you can configure the WAS server to intimate you before 90days of the cert expriry.. read the below document for the procedure
https://www.ibm.com/support/knowledgecenter/SSAW57_7.0.0/com.ibm.websphere.nd.doc/info/ae/ae/csec_sslcertmonitoring.html
Thanks
Gautam
Sr. Middleware Technology Architect / Consultant
+919791064487