Menina planina, on Golte also by gondola and car, From the hut on Slemen to Smrekovec, You wait at the hut, on Peca, over Knipsovo sedlo, wait for him at the top at the gondola (A), Resevna, Mirna gora, Kope-Ribniška hut - Rogla, Mariborsko Pohorje also offers more variants, Slivnica, Dom na Gospodični, Krim, around Celje hut, ...
If I understand correctly, you drive to some point (hut), husband does the tour meanwhile and you meet at the hut. Sometimes you could go from hut to summit together, e.g. Smrekovec about 20 min.
Really, ideas for 2 pregnancies. But you didn't tell us where you're from approximately, since you probably don't want 2 hours drive each way. I poured you suggestions from Carinthia to Dolenjska

All the best to the future hiker!