Many companies in EU-land preach the use of dual autopilots on all ILS approaches, so yes, you could find yourself technically able to autoland from DA/H. However, this except in an extreme emergency, is not allowed and worries about 'a large fuel loss' do not normally constitute an emergency. Loss of visual reference at DA/H requires a G/A and I am surprised from your 'profile' that you need to ask!
Your description 'without losing the lights' does not actually constitute loss of visual reference in EUOPS and a 'drop' in visibility past the relevant point does not count - it is the crew's decision whether to continue.
I note you do not tell us which regulatory framework you are licensed under, so it may, of course, be 'acceptable' in yours.