Note that PROG + so-called state verb does not automatically trigger an inchoative meaning. Rather, the inchoative meaning seems to be generated by the context.
Verbs like andastan ‘understand’ which are clearly stative in English can either be used as an active or a stative verb in Ghanaian Pidgin English. Therefore, when andastan is preceded by the PROG marker dè, it is no longer a stative verb but means something like 'actively understanding'.
However, my consultants did not agree on the meaning of PROG+STATIVE VERB constructions, one claiming that an inchoative reading is possible (see Example 71 à dè taia), the other that it is impossible (à dè hɔŋ [1SG PROG be.hungry] can only mean 'I am hungry', not 'I am getting hungry').
Source: Huber 1999: 230