To resurrect a PPL(H):
Obtain a Class 2 medical certificate.
Undergo sufficient training at an ATO to reach the standard to pass a type rating proficiency check.
Pass a type rating proficiency check (make sure the examiner certifies Level 6 language proficiency)
Apply for the issue of an EASA PPL(H) on Form SRG 1104
To obtain a LAPL(H):
Obtain a LAPL medical certificate.
Undergo sufficient training at an ATO to reach the standard to pass a LAPL(H) proficiency check.
Pass a LAPL(H) proficiency check (make sure the examiner certifies Level 6 language proficiency)
Apply for the issue of an EASA LAPL(H) on Form SRG 1104
I would not say that obtaining a LAPL(H) is any simpler or cheaper than resurrecting your PPL(H). The cost of on-going maintenance may be slightly less but, given the cost of hiring an aircraft, fairly insignificant.